Why would five hundred and five be same as one? Planned maintenance scheduled April 23, 2019 at 00:00UTC (8:00pm US/Eastern) Announcing the arrival of Valued Associate #679: Cesar Manara Unicorn Meta Zoo #1: Why another podcast?What's the teacher's fractional addition algorithm?One hundred and one hatsGrandpa can't even tell time? Another Grandpa Mystery1 = 2? A Non-Math RiddleSimple Math Problem #3$6$ is prime? Another Grandpa Mystery (not made by @DEEM, this time)A Body Part inside another Body PartMy Grandpa's Box #1Can 4 = 6 and 10 = 1000? : Another Grandpa QuestionI walked uphill both ways

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Why would five hundred and five be same as one?



Planned maintenance scheduled April 23, 2019 at 00:00UTC (8:00pm US/Eastern)
Announcing the arrival of Valued Associate #679: Cesar Manara
Unicorn Meta Zoo #1: Why another podcast?What's the teacher's fractional addition algorithm?One hundred and one hatsGrandpa can't even tell time? Another Grandpa Mystery1 = 2? A Non-Math RiddleSimple Math Problem #3$6$ is prime? Another Grandpa Mystery (not made by @DEEM, this time)A Body Part inside another Body PartMy Grandpa's Box #1Can 4 = 6 and 10 = 1000? : Another Grandpa QuestionI walked uphill both ways










10












$begingroup$


Grandpa was in his crazy math mood again.




"using rot13 and your math knowledge prove to me that



505 = 1"




He said.



Really? Can you?



HINT




Think Trigonometry











share|improve this question











$endgroup$







  • 4




    $begingroup$
    Don't have an answer, but I'll note 2 findings given the hint: 1) 505 is the hypotenuse of a triangle with integer length sides. 2) Rot13-ing the Roman Numerals for the number 105 produces a trigonometric term. Maybe one of these is on the right path and will help someone.
    $endgroup$
    – TwoBitOperation
    Mar 20 at 14:40







  • 3




    $begingroup$
    @TwoBitOperation for anyone possibly going with route 1: The possible sides of a triangle that work are (100, 495) (217, 456) (303, 404) (336, 377)
    $endgroup$
    – akozi
    Mar 20 at 16:28















10












$begingroup$


Grandpa was in his crazy math mood again.




"using rot13 and your math knowledge prove to me that



505 = 1"




He said.



Really? Can you?



HINT




Think Trigonometry











share|improve this question











$endgroup$







  • 4




    $begingroup$
    Don't have an answer, but I'll note 2 findings given the hint: 1) 505 is the hypotenuse of a triangle with integer length sides. 2) Rot13-ing the Roman Numerals for the number 105 produces a trigonometric term. Maybe one of these is on the right path and will help someone.
    $endgroup$
    – TwoBitOperation
    Mar 20 at 14:40







  • 3




    $begingroup$
    @TwoBitOperation for anyone possibly going with route 1: The possible sides of a triangle that work are (100, 495) (217, 456) (303, 404) (336, 377)
    $endgroup$
    – akozi
    Mar 20 at 16:28













10












10








10


3



$begingroup$


Grandpa was in his crazy math mood again.




"using rot13 and your math knowledge prove to me that



505 = 1"




He said.



Really? Can you?



HINT




Think Trigonometry











share|improve this question











$endgroup$




Grandpa was in his crazy math mood again.




"using rot13 and your math knowledge prove to me that



505 = 1"




He said.



Really? Can you?



HINT




Think Trigonometry








riddle mathematics lateral-thinking






share|improve this question















share|improve this question













share|improve this question




share|improve this question








edited Mar 20 at 20:48









JonMark Perry

20.8k64199




20.8k64199










asked Mar 19 at 13:02









DEEMDEEM

6,583121117




6,583121117







  • 4




    $begingroup$
    Don't have an answer, but I'll note 2 findings given the hint: 1) 505 is the hypotenuse of a triangle with integer length sides. 2) Rot13-ing the Roman Numerals for the number 105 produces a trigonometric term. Maybe one of these is on the right path and will help someone.
    $endgroup$
    – TwoBitOperation
    Mar 20 at 14:40







  • 3




    $begingroup$
    @TwoBitOperation for anyone possibly going with route 1: The possible sides of a triangle that work are (100, 495) (217, 456) (303, 404) (336, 377)
    $endgroup$
    – akozi
    Mar 20 at 16:28












  • 4




    $begingroup$
    Don't have an answer, but I'll note 2 findings given the hint: 1) 505 is the hypotenuse of a triangle with integer length sides. 2) Rot13-ing the Roman Numerals for the number 105 produces a trigonometric term. Maybe one of these is on the right path and will help someone.
    $endgroup$
    – TwoBitOperation
    Mar 20 at 14:40







  • 3




    $begingroup$
    @TwoBitOperation for anyone possibly going with route 1: The possible sides of a triangle that work are (100, 495) (217, 456) (303, 404) (336, 377)
    $endgroup$
    – akozi
    Mar 20 at 16:28







4




4




$begingroup$
Don't have an answer, but I'll note 2 findings given the hint: 1) 505 is the hypotenuse of a triangle with integer length sides. 2) Rot13-ing the Roman Numerals for the number 105 produces a trigonometric term. Maybe one of these is on the right path and will help someone.
$endgroup$
– TwoBitOperation
Mar 20 at 14:40





$begingroup$
Don't have an answer, but I'll note 2 findings given the hint: 1) 505 is the hypotenuse of a triangle with integer length sides. 2) Rot13-ing the Roman Numerals for the number 105 produces a trigonometric term. Maybe one of these is on the right path and will help someone.
$endgroup$
– TwoBitOperation
Mar 20 at 14:40





3




3




$begingroup$
@TwoBitOperation for anyone possibly going with route 1: The possible sides of a triangle that work are (100, 495) (217, 456) (303, 404) (336, 377)
$endgroup$
– akozi
Mar 20 at 16:28




$begingroup$
@TwoBitOperation for anyone possibly going with route 1: The possible sides of a triangle that work are (100, 495) (217, 456) (303, 404) (336, 377)
$endgroup$
– akozi
Mar 20 at 16:28










9 Answers
9






active

oldest

votes


















25












$begingroup$

Here's one possible solution:







1. $505 = 1$ : Given

2. $DV = 1$ : By Romanizing left

3. $V = 1/D$

4. $CV = C/D$ : Multiply through by 100

5. $(PI)= C/D$ : By Rot(13)ing left

6. $Dπ = C$


By the circumference formula for a circle (C= πD),the left and right are equivalent




Q.E.D.






share|improve this answer











$endgroup$








  • 12




    $begingroup$
    Wow. If that's the intended solution I'll be quite surprised. Regardless, that's an amazingly convoluted way to answer this, and I love it. :)
    $endgroup$
    – Rubio
    Mar 20 at 20:51






  • 5




    $begingroup$
    I'm... just as surprised as everyone else here.
    $endgroup$
    – TwoBitOperation
    Mar 20 at 21:44






  • 8




    $begingroup$
    @DEEM What does this have to do with trigonometry?
    $endgroup$
    – noedne
    Mar 20 at 21:53






  • 4




    $begingroup$
    wouldn't step 5 require you to to do both sides, yielding P/Q?
    $endgroup$
    – corsiKa
    Mar 21 at 0:49






  • 8




    $begingroup$
    Step 2 to 3 doesn't make sense, as Roman numerals are additive, not multiplicative.
    $endgroup$
    – Herb Wolfe
    Mar 21 at 3:19


















43





+100







$begingroup$

Reasoning




In Roman numerals 505 is DV. If we use rot13 on these two characters, we get QI.
Qi is the circulating life force whose existence and properties are the basis of much Chinese philosophy and medicine. It allows us to say that we are one with the universe. In this way, 505=1







share|improve this answer









$endgroup$












  • $begingroup$
    Lot different than my answer
    $endgroup$
    – DEEM
    Mar 19 at 13:10






  • 1




    $begingroup$
    @DEEM Can you tell us a way in which your answer differs from this answer?
    $endgroup$
    – Tanner Swett
    Mar 19 at 18:48






  • 1




    $begingroup$
    So there is the rot13 part and there is the math part. Both are needed for my answer
    $endgroup$
    – DEEM
    Mar 20 at 1:36


















29












$begingroup$

By using




hexomino's idea of ROT13 on Roman numerals




we can obtain




$textROT13(505)=textROT13(V^4-V^3+V)=I^4-I^3+I=1$.







share|improve this answer









$endgroup$












  • $begingroup$
    Could you (or one of the 22 upvoters) explain the last step to me?
    $endgroup$
    – user1717828
    Mar 21 at 1:35











  • $begingroup$
    @user1717828 $I$ is the Roman numeral for $1$, so $I^4-I^3+I=1^4-1^3+1=1-1+1=1$.
    $endgroup$
    – noedne
    Mar 21 at 2:03






  • 1




    $begingroup$
    Ahh!! I did the complex math out like three times before submitting to Google to confirm I wasn't crazy. No idea what I was thinking. Thanks!
    $endgroup$
    – user1717828
    Mar 21 at 10:46


















7












$begingroup$


The rot13 translation of "one" is "bar". The only connection between "bar" and 505 that I could find is this very obscure definition given in urban dictionary (which was entry #4 and has more downvotes than upvotes), which says that it's slang for getting a drink at a bar with friends after work. Perhaps it's a really old outdated slang term, which is why your grandpa used it.







share|improve this answer









$endgroup$












  • $begingroup$
    Beer O'Clock, Can't be any different to 4:20 or the Masonic arguments pertaining to yardarms or the time of day, It's beer O'Clock somewhere in the world. In the olden days 505 meant OOO. We left at 5pm.
    $endgroup$
    – mckenzm
    Mar 21 at 5:42


















6












$begingroup$


Elaborating on @hexomino answer 505 -> DV.




Is it possible that:




I want to DownVote you 505 times which was odd number resulting 1 DV.
var num=505; isOdd(num); function isOdd(num) return num % 2;

I'm not downvoting you.







share|improve this answer









$endgroup$




















    2












    $begingroup$


    Use the digital radix: 5 + 0 + 5 = 10, 1 + 0 = 1







    share|improve this answer









    $endgroup$








    • 12




      $begingroup$
      And where is Rot13 used?
      $endgroup$
      – Chronocidal
      Mar 19 at 15:58


















    2












    $begingroup$


    If you use a "fivethousandfiftydecimal" base then 505 in this base is equal to 1 in decimal base.
    Just like 12 in octal base is equal to 10 in decimal base.







    share|improve this answer









    $endgroup$








    • 1




      $begingroup$
      Welcome to Puzzling.SE! I like the lateral thinking in this answer, but I'm afraid it doesn't quite answer the question, since it doesn't use rot13.
      $endgroup$
      – Brandon_J
      Mar 21 at 13:27


















    0












    $begingroup$

    Working out possible solutions using rot13 and trig:



    I feel gross and like I'm doing something wrong doing this but:




    505 = 5 * 101 => V * CI




    Then you:




    rot13(V * CI) = I * PI => i * pi (getting pi honestly is the only reason I think this might be the right direction.




    Here's where the rot13(gevt) comes in I guess? Not sure where to proceed from there.






    share|improve this answer









    $endgroup$








    • 1




      $begingroup$
      rot13 of I is not I.
      $endgroup$
      – Rubio
      Mar 20 at 20:53






    • 1




      $begingroup$
      Well I'm an idiot.
      $endgroup$
      – Nick Vitha
      Mar 20 at 21:05


















    0












    $begingroup$

    Tongue in cheek answer - technically works anyhow ;-)




    050/5 rdhnyf 6/5 gurersber 050 rdhnyf 6. "Cebirq" hfvat zngu xabjyrqtr naq ebg68, nf erdhrfgrq ;-)

    Rot13 a_zA-Z0-9







    share|improve this answer









    $endgroup$













      Your Answer








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      9 Answers
      9






      active

      oldest

      votes








      9 Answers
      9






      active

      oldest

      votes









      active

      oldest

      votes






      active

      oldest

      votes









      25












      $begingroup$

      Here's one possible solution:







      1. $505 = 1$ : Given

      2. $DV = 1$ : By Romanizing left

      3. $V = 1/D$

      4. $CV = C/D$ : Multiply through by 100

      5. $(PI)= C/D$ : By Rot(13)ing left

      6. $Dπ = C$


      By the circumference formula for a circle (C= πD),the left and right are equivalent




      Q.E.D.






      share|improve this answer











      $endgroup$








      • 12




        $begingroup$
        Wow. If that's the intended solution I'll be quite surprised. Regardless, that's an amazingly convoluted way to answer this, and I love it. :)
        $endgroup$
        – Rubio
        Mar 20 at 20:51






      • 5




        $begingroup$
        I'm... just as surprised as everyone else here.
        $endgroup$
        – TwoBitOperation
        Mar 20 at 21:44






      • 8




        $begingroup$
        @DEEM What does this have to do with trigonometry?
        $endgroup$
        – noedne
        Mar 20 at 21:53






      • 4




        $begingroup$
        wouldn't step 5 require you to to do both sides, yielding P/Q?
        $endgroup$
        – corsiKa
        Mar 21 at 0:49






      • 8




        $begingroup$
        Step 2 to 3 doesn't make sense, as Roman numerals are additive, not multiplicative.
        $endgroup$
        – Herb Wolfe
        Mar 21 at 3:19















      25












      $begingroup$

      Here's one possible solution:







      1. $505 = 1$ : Given

      2. $DV = 1$ : By Romanizing left

      3. $V = 1/D$

      4. $CV = C/D$ : Multiply through by 100

      5. $(PI)= C/D$ : By Rot(13)ing left

      6. $Dπ = C$


      By the circumference formula for a circle (C= πD),the left and right are equivalent




      Q.E.D.






      share|improve this answer











      $endgroup$








      • 12




        $begingroup$
        Wow. If that's the intended solution I'll be quite surprised. Regardless, that's an amazingly convoluted way to answer this, and I love it. :)
        $endgroup$
        – Rubio
        Mar 20 at 20:51






      • 5




        $begingroup$
        I'm... just as surprised as everyone else here.
        $endgroup$
        – TwoBitOperation
        Mar 20 at 21:44






      • 8




        $begingroup$
        @DEEM What does this have to do with trigonometry?
        $endgroup$
        – noedne
        Mar 20 at 21:53






      • 4




        $begingroup$
        wouldn't step 5 require you to to do both sides, yielding P/Q?
        $endgroup$
        – corsiKa
        Mar 21 at 0:49






      • 8




        $begingroup$
        Step 2 to 3 doesn't make sense, as Roman numerals are additive, not multiplicative.
        $endgroup$
        – Herb Wolfe
        Mar 21 at 3:19













      25












      25








      25





      $begingroup$

      Here's one possible solution:







      1. $505 = 1$ : Given

      2. $DV = 1$ : By Romanizing left

      3. $V = 1/D$

      4. $CV = C/D$ : Multiply through by 100

      5. $(PI)= C/D$ : By Rot(13)ing left

      6. $Dπ = C$


      By the circumference formula for a circle (C= πD),the left and right are equivalent




      Q.E.D.






      share|improve this answer











      $endgroup$



      Here's one possible solution:







      1. $505 = 1$ : Given

      2. $DV = 1$ : By Romanizing left

      3. $V = 1/D$

      4. $CV = C/D$ : Multiply through by 100

      5. $(PI)= C/D$ : By Rot(13)ing left

      6. $Dπ = C$


      By the circumference formula for a circle (C= πD),the left and right are equivalent




      Q.E.D.







      share|improve this answer














      share|improve this answer



      share|improve this answer








      edited Mar 20 at 20:32

























      answered Mar 20 at 20:19









      TwoBitOperationTwoBitOperation

      8,57911667




      8,57911667







      • 12




        $begingroup$
        Wow. If that's the intended solution I'll be quite surprised. Regardless, that's an amazingly convoluted way to answer this, and I love it. :)
        $endgroup$
        – Rubio
        Mar 20 at 20:51






      • 5




        $begingroup$
        I'm... just as surprised as everyone else here.
        $endgroup$
        – TwoBitOperation
        Mar 20 at 21:44






      • 8




        $begingroup$
        @DEEM What does this have to do with trigonometry?
        $endgroup$
        – noedne
        Mar 20 at 21:53






      • 4




        $begingroup$
        wouldn't step 5 require you to to do both sides, yielding P/Q?
        $endgroup$
        – corsiKa
        Mar 21 at 0:49






      • 8




        $begingroup$
        Step 2 to 3 doesn't make sense, as Roman numerals are additive, not multiplicative.
        $endgroup$
        – Herb Wolfe
        Mar 21 at 3:19












      • 12




        $begingroup$
        Wow. If that's the intended solution I'll be quite surprised. Regardless, that's an amazingly convoluted way to answer this, and I love it. :)
        $endgroup$
        – Rubio
        Mar 20 at 20:51






      • 5




        $begingroup$
        I'm... just as surprised as everyone else here.
        $endgroup$
        – TwoBitOperation
        Mar 20 at 21:44






      • 8




        $begingroup$
        @DEEM What does this have to do with trigonometry?
        $endgroup$
        – noedne
        Mar 20 at 21:53






      • 4




        $begingroup$
        wouldn't step 5 require you to to do both sides, yielding P/Q?
        $endgroup$
        – corsiKa
        Mar 21 at 0:49






      • 8




        $begingroup$
        Step 2 to 3 doesn't make sense, as Roman numerals are additive, not multiplicative.
        $endgroup$
        – Herb Wolfe
        Mar 21 at 3:19







      12




      12




      $begingroup$
      Wow. If that's the intended solution I'll be quite surprised. Regardless, that's an amazingly convoluted way to answer this, and I love it. :)
      $endgroup$
      – Rubio
      Mar 20 at 20:51




      $begingroup$
      Wow. If that's the intended solution I'll be quite surprised. Regardless, that's an amazingly convoluted way to answer this, and I love it. :)
      $endgroup$
      – Rubio
      Mar 20 at 20:51




      5




      5




      $begingroup$
      I'm... just as surprised as everyone else here.
      $endgroup$
      – TwoBitOperation
      Mar 20 at 21:44




      $begingroup$
      I'm... just as surprised as everyone else here.
      $endgroup$
      – TwoBitOperation
      Mar 20 at 21:44




      8




      8




      $begingroup$
      @DEEM What does this have to do with trigonometry?
      $endgroup$
      – noedne
      Mar 20 at 21:53




      $begingroup$
      @DEEM What does this have to do with trigonometry?
      $endgroup$
      – noedne
      Mar 20 at 21:53




      4




      4




      $begingroup$
      wouldn't step 5 require you to to do both sides, yielding P/Q?
      $endgroup$
      – corsiKa
      Mar 21 at 0:49




      $begingroup$
      wouldn't step 5 require you to to do both sides, yielding P/Q?
      $endgroup$
      – corsiKa
      Mar 21 at 0:49




      8




      8




      $begingroup$
      Step 2 to 3 doesn't make sense, as Roman numerals are additive, not multiplicative.
      $endgroup$
      – Herb Wolfe
      Mar 21 at 3:19




      $begingroup$
      Step 2 to 3 doesn't make sense, as Roman numerals are additive, not multiplicative.
      $endgroup$
      – Herb Wolfe
      Mar 21 at 3:19











      43





      +100







      $begingroup$

      Reasoning




      In Roman numerals 505 is DV. If we use rot13 on these two characters, we get QI.
      Qi is the circulating life force whose existence and properties are the basis of much Chinese philosophy and medicine. It allows us to say that we are one with the universe. In this way, 505=1







      share|improve this answer









      $endgroup$












      • $begingroup$
        Lot different than my answer
        $endgroup$
        – DEEM
        Mar 19 at 13:10






      • 1




        $begingroup$
        @DEEM Can you tell us a way in which your answer differs from this answer?
        $endgroup$
        – Tanner Swett
        Mar 19 at 18:48






      • 1




        $begingroup$
        So there is the rot13 part and there is the math part. Both are needed for my answer
        $endgroup$
        – DEEM
        Mar 20 at 1:36















      43





      +100







      $begingroup$

      Reasoning




      In Roman numerals 505 is DV. If we use rot13 on these two characters, we get QI.
      Qi is the circulating life force whose existence and properties are the basis of much Chinese philosophy and medicine. It allows us to say that we are one with the universe. In this way, 505=1







      share|improve this answer









      $endgroup$












      • $begingroup$
        Lot different than my answer
        $endgroup$
        – DEEM
        Mar 19 at 13:10






      • 1




        $begingroup$
        @DEEM Can you tell us a way in which your answer differs from this answer?
        $endgroup$
        – Tanner Swett
        Mar 19 at 18:48






      • 1




        $begingroup$
        So there is the rot13 part and there is the math part. Both are needed for my answer
        $endgroup$
        – DEEM
        Mar 20 at 1:36













      43





      +100







      43





      +100



      43




      +100



      $begingroup$

      Reasoning




      In Roman numerals 505 is DV. If we use rot13 on these two characters, we get QI.
      Qi is the circulating life force whose existence and properties are the basis of much Chinese philosophy and medicine. It allows us to say that we are one with the universe. In this way, 505=1







      share|improve this answer









      $endgroup$



      Reasoning




      In Roman numerals 505 is DV. If we use rot13 on these two characters, we get QI.
      Qi is the circulating life force whose existence and properties are the basis of much Chinese philosophy and medicine. It allows us to say that we are one with the universe. In this way, 505=1








      share|improve this answer












      share|improve this answer



      share|improve this answer










      answered Mar 19 at 13:08









      hexominohexomino

      47.5k4143222




      47.5k4143222











      • $begingroup$
        Lot different than my answer
        $endgroup$
        – DEEM
        Mar 19 at 13:10






      • 1




        $begingroup$
        @DEEM Can you tell us a way in which your answer differs from this answer?
        $endgroup$
        – Tanner Swett
        Mar 19 at 18:48






      • 1




        $begingroup$
        So there is the rot13 part and there is the math part. Both are needed for my answer
        $endgroup$
        – DEEM
        Mar 20 at 1:36
















      • $begingroup$
        Lot different than my answer
        $endgroup$
        – DEEM
        Mar 19 at 13:10






      • 1




        $begingroup$
        @DEEM Can you tell us a way in which your answer differs from this answer?
        $endgroup$
        – Tanner Swett
        Mar 19 at 18:48






      • 1




        $begingroup$
        So there is the rot13 part and there is the math part. Both are needed for my answer
        $endgroup$
        – DEEM
        Mar 20 at 1:36















      $begingroup$
      Lot different than my answer
      $endgroup$
      – DEEM
      Mar 19 at 13:10




      $begingroup$
      Lot different than my answer
      $endgroup$
      – DEEM
      Mar 19 at 13:10




      1




      1




      $begingroup$
      @DEEM Can you tell us a way in which your answer differs from this answer?
      $endgroup$
      – Tanner Swett
      Mar 19 at 18:48




      $begingroup$
      @DEEM Can you tell us a way in which your answer differs from this answer?
      $endgroup$
      – Tanner Swett
      Mar 19 at 18:48




      1




      1




      $begingroup$
      So there is the rot13 part and there is the math part. Both are needed for my answer
      $endgroup$
      – DEEM
      Mar 20 at 1:36




      $begingroup$
      So there is the rot13 part and there is the math part. Both are needed for my answer
      $endgroup$
      – DEEM
      Mar 20 at 1:36











      29












      $begingroup$

      By using




      hexomino's idea of ROT13 on Roman numerals




      we can obtain




      $textROT13(505)=textROT13(V^4-V^3+V)=I^4-I^3+I=1$.







      share|improve this answer









      $endgroup$












      • $begingroup$
        Could you (or one of the 22 upvoters) explain the last step to me?
        $endgroup$
        – user1717828
        Mar 21 at 1:35











      • $begingroup$
        @user1717828 $I$ is the Roman numeral for $1$, so $I^4-I^3+I=1^4-1^3+1=1-1+1=1$.
        $endgroup$
        – noedne
        Mar 21 at 2:03






      • 1




        $begingroup$
        Ahh!! I did the complex math out like three times before submitting to Google to confirm I wasn't crazy. No idea what I was thinking. Thanks!
        $endgroup$
        – user1717828
        Mar 21 at 10:46















      29












      $begingroup$

      By using




      hexomino's idea of ROT13 on Roman numerals




      we can obtain




      $textROT13(505)=textROT13(V^4-V^3+V)=I^4-I^3+I=1$.







      share|improve this answer









      $endgroup$












      • $begingroup$
        Could you (or one of the 22 upvoters) explain the last step to me?
        $endgroup$
        – user1717828
        Mar 21 at 1:35











      • $begingroup$
        @user1717828 $I$ is the Roman numeral for $1$, so $I^4-I^3+I=1^4-1^3+1=1-1+1=1$.
        $endgroup$
        – noedne
        Mar 21 at 2:03






      • 1




        $begingroup$
        Ahh!! I did the complex math out like three times before submitting to Google to confirm I wasn't crazy. No idea what I was thinking. Thanks!
        $endgroup$
        – user1717828
        Mar 21 at 10:46













      29












      29








      29





      $begingroup$

      By using




      hexomino's idea of ROT13 on Roman numerals




      we can obtain




      $textROT13(505)=textROT13(V^4-V^3+V)=I^4-I^3+I=1$.







      share|improve this answer









      $endgroup$



      By using




      hexomino's idea of ROT13 on Roman numerals




      we can obtain




      $textROT13(505)=textROT13(V^4-V^3+V)=I^4-I^3+I=1$.








      share|improve this answer












      share|improve this answer



      share|improve this answer










      answered Mar 19 at 15:27









      noednenoedne

      9,42012566




      9,42012566











      • $begingroup$
        Could you (or one of the 22 upvoters) explain the last step to me?
        $endgroup$
        – user1717828
        Mar 21 at 1:35











      • $begingroup$
        @user1717828 $I$ is the Roman numeral for $1$, so $I^4-I^3+I=1^4-1^3+1=1-1+1=1$.
        $endgroup$
        – noedne
        Mar 21 at 2:03






      • 1




        $begingroup$
        Ahh!! I did the complex math out like three times before submitting to Google to confirm I wasn't crazy. No idea what I was thinking. Thanks!
        $endgroup$
        – user1717828
        Mar 21 at 10:46
















      • $begingroup$
        Could you (or one of the 22 upvoters) explain the last step to me?
        $endgroup$
        – user1717828
        Mar 21 at 1:35











      • $begingroup$
        @user1717828 $I$ is the Roman numeral for $1$, so $I^4-I^3+I=1^4-1^3+1=1-1+1=1$.
        $endgroup$
        – noedne
        Mar 21 at 2:03






      • 1




        $begingroup$
        Ahh!! I did the complex math out like three times before submitting to Google to confirm I wasn't crazy. No idea what I was thinking. Thanks!
        $endgroup$
        – user1717828
        Mar 21 at 10:46















      $begingroup$
      Could you (or one of the 22 upvoters) explain the last step to me?
      $endgroup$
      – user1717828
      Mar 21 at 1:35





      $begingroup$
      Could you (or one of the 22 upvoters) explain the last step to me?
      $endgroup$
      – user1717828
      Mar 21 at 1:35













      $begingroup$
      @user1717828 $I$ is the Roman numeral for $1$, so $I^4-I^3+I=1^4-1^3+1=1-1+1=1$.
      $endgroup$
      – noedne
      Mar 21 at 2:03




      $begingroup$
      @user1717828 $I$ is the Roman numeral for $1$, so $I^4-I^3+I=1^4-1^3+1=1-1+1=1$.
      $endgroup$
      – noedne
      Mar 21 at 2:03




      1




      1




      $begingroup$
      Ahh!! I did the complex math out like three times before submitting to Google to confirm I wasn't crazy. No idea what I was thinking. Thanks!
      $endgroup$
      – user1717828
      Mar 21 at 10:46




      $begingroup$
      Ahh!! I did the complex math out like three times before submitting to Google to confirm I wasn't crazy. No idea what I was thinking. Thanks!
      $endgroup$
      – user1717828
      Mar 21 at 10:46











      7












      $begingroup$


      The rot13 translation of "one" is "bar". The only connection between "bar" and 505 that I could find is this very obscure definition given in urban dictionary (which was entry #4 and has more downvotes than upvotes), which says that it's slang for getting a drink at a bar with friends after work. Perhaps it's a really old outdated slang term, which is why your grandpa used it.







      share|improve this answer









      $endgroup$












      • $begingroup$
        Beer O'Clock, Can't be any different to 4:20 or the Masonic arguments pertaining to yardarms or the time of day, It's beer O'Clock somewhere in the world. In the olden days 505 meant OOO. We left at 5pm.
        $endgroup$
        – mckenzm
        Mar 21 at 5:42















      7












      $begingroup$


      The rot13 translation of "one" is "bar". The only connection between "bar" and 505 that I could find is this very obscure definition given in urban dictionary (which was entry #4 and has more downvotes than upvotes), which says that it's slang for getting a drink at a bar with friends after work. Perhaps it's a really old outdated slang term, which is why your grandpa used it.







      share|improve this answer









      $endgroup$












      • $begingroup$
        Beer O'Clock, Can't be any different to 4:20 or the Masonic arguments pertaining to yardarms or the time of day, It's beer O'Clock somewhere in the world. In the olden days 505 meant OOO. We left at 5pm.
        $endgroup$
        – mckenzm
        Mar 21 at 5:42













      7












      7








      7





      $begingroup$


      The rot13 translation of "one" is "bar". The only connection between "bar" and 505 that I could find is this very obscure definition given in urban dictionary (which was entry #4 and has more downvotes than upvotes), which says that it's slang for getting a drink at a bar with friends after work. Perhaps it's a really old outdated slang term, which is why your grandpa used it.







      share|improve this answer









      $endgroup$




      The rot13 translation of "one" is "bar". The only connection between "bar" and 505 that I could find is this very obscure definition given in urban dictionary (which was entry #4 and has more downvotes than upvotes), which says that it's slang for getting a drink at a bar with friends after work. Perhaps it's a really old outdated slang term, which is why your grandpa used it.








      share|improve this answer












      share|improve this answer



      share|improve this answer










      answered Mar 19 at 16:38









      BridgeburnersBridgeburners

      2186




      2186











      • $begingroup$
        Beer O'Clock, Can't be any different to 4:20 or the Masonic arguments pertaining to yardarms or the time of day, It's beer O'Clock somewhere in the world. In the olden days 505 meant OOO. We left at 5pm.
        $endgroup$
        – mckenzm
        Mar 21 at 5:42
















      • $begingroup$
        Beer O'Clock, Can't be any different to 4:20 or the Masonic arguments pertaining to yardarms or the time of day, It's beer O'Clock somewhere in the world. In the olden days 505 meant OOO. We left at 5pm.
        $endgroup$
        – mckenzm
        Mar 21 at 5:42















      $begingroup$
      Beer O'Clock, Can't be any different to 4:20 or the Masonic arguments pertaining to yardarms or the time of day, It's beer O'Clock somewhere in the world. In the olden days 505 meant OOO. We left at 5pm.
      $endgroup$
      – mckenzm
      Mar 21 at 5:42




      $begingroup$
      Beer O'Clock, Can't be any different to 4:20 or the Masonic arguments pertaining to yardarms or the time of day, It's beer O'Clock somewhere in the world. In the olden days 505 meant OOO. We left at 5pm.
      $endgroup$
      – mckenzm
      Mar 21 at 5:42











      6












      $begingroup$


      Elaborating on @hexomino answer 505 -> DV.




      Is it possible that:




      I want to DownVote you 505 times which was odd number resulting 1 DV.
      var num=505; isOdd(num); function isOdd(num) return num % 2;

      I'm not downvoting you.







      share|improve this answer









      $endgroup$

















        6












        $begingroup$


        Elaborating on @hexomino answer 505 -> DV.




        Is it possible that:




        I want to DownVote you 505 times which was odd number resulting 1 DV.
        var num=505; isOdd(num); function isOdd(num) return num % 2;

        I'm not downvoting you.







        share|improve this answer









        $endgroup$















          6












          6








          6





          $begingroup$


          Elaborating on @hexomino answer 505 -> DV.




          Is it possible that:




          I want to DownVote you 505 times which was odd number resulting 1 DV.
          var num=505; isOdd(num); function isOdd(num) return num % 2;

          I'm not downvoting you.







          share|improve this answer









          $endgroup$




          Elaborating on @hexomino answer 505 -> DV.




          Is it possible that:




          I want to DownVote you 505 times which was odd number resulting 1 DV.
          var num=505; isOdd(num); function isOdd(num) return num % 2;

          I'm not downvoting you.








          share|improve this answer












          share|improve this answer



          share|improve this answer










          answered Mar 20 at 10:24









          MukyuuMukyuu

          5191113




          5191113





















              2












              $begingroup$


              Use the digital radix: 5 + 0 + 5 = 10, 1 + 0 = 1







              share|improve this answer









              $endgroup$








              • 12




                $begingroup$
                And where is Rot13 used?
                $endgroup$
                – Chronocidal
                Mar 19 at 15:58















              2












              $begingroup$


              Use the digital radix: 5 + 0 + 5 = 10, 1 + 0 = 1







              share|improve this answer









              $endgroup$








              • 12




                $begingroup$
                And where is Rot13 used?
                $endgroup$
                – Chronocidal
                Mar 19 at 15:58













              2












              2








              2





              $begingroup$


              Use the digital radix: 5 + 0 + 5 = 10, 1 + 0 = 1







              share|improve this answer









              $endgroup$




              Use the digital radix: 5 + 0 + 5 = 10, 1 + 0 = 1








              share|improve this answer












              share|improve this answer



              share|improve this answer










              answered Mar 19 at 15:11









              LurkerLurker

              211




              211







              • 12




                $begingroup$
                And where is Rot13 used?
                $endgroup$
                – Chronocidal
                Mar 19 at 15:58












              • 12




                $begingroup$
                And where is Rot13 used?
                $endgroup$
                – Chronocidal
                Mar 19 at 15:58







              12




              12




              $begingroup$
              And where is Rot13 used?
              $endgroup$
              – Chronocidal
              Mar 19 at 15:58




              $begingroup$
              And where is Rot13 used?
              $endgroup$
              – Chronocidal
              Mar 19 at 15:58











              2












              $begingroup$


              If you use a "fivethousandfiftydecimal" base then 505 in this base is equal to 1 in decimal base.
              Just like 12 in octal base is equal to 10 in decimal base.







              share|improve this answer









              $endgroup$








              • 1




                $begingroup$
                Welcome to Puzzling.SE! I like the lateral thinking in this answer, but I'm afraid it doesn't quite answer the question, since it doesn't use rot13.
                $endgroup$
                – Brandon_J
                Mar 21 at 13:27















              2












              $begingroup$


              If you use a "fivethousandfiftydecimal" base then 505 in this base is equal to 1 in decimal base.
              Just like 12 in octal base is equal to 10 in decimal base.







              share|improve this answer









              $endgroup$








              • 1




                $begingroup$
                Welcome to Puzzling.SE! I like the lateral thinking in this answer, but I'm afraid it doesn't quite answer the question, since it doesn't use rot13.
                $endgroup$
                – Brandon_J
                Mar 21 at 13:27













              2












              2








              2





              $begingroup$


              If you use a "fivethousandfiftydecimal" base then 505 in this base is equal to 1 in decimal base.
              Just like 12 in octal base is equal to 10 in decimal base.







              share|improve this answer









              $endgroup$




              If you use a "fivethousandfiftydecimal" base then 505 in this base is equal to 1 in decimal base.
              Just like 12 in octal base is equal to 10 in decimal base.








              share|improve this answer












              share|improve this answer



              share|improve this answer










              answered Mar 21 at 11:07









              BaudoisBaudois

              211




              211







              • 1




                $begingroup$
                Welcome to Puzzling.SE! I like the lateral thinking in this answer, but I'm afraid it doesn't quite answer the question, since it doesn't use rot13.
                $endgroup$
                – Brandon_J
                Mar 21 at 13:27












              • 1




                $begingroup$
                Welcome to Puzzling.SE! I like the lateral thinking in this answer, but I'm afraid it doesn't quite answer the question, since it doesn't use rot13.
                $endgroup$
                – Brandon_J
                Mar 21 at 13:27







              1




              1




              $begingroup$
              Welcome to Puzzling.SE! I like the lateral thinking in this answer, but I'm afraid it doesn't quite answer the question, since it doesn't use rot13.
              $endgroup$
              – Brandon_J
              Mar 21 at 13:27




              $begingroup$
              Welcome to Puzzling.SE! I like the lateral thinking in this answer, but I'm afraid it doesn't quite answer the question, since it doesn't use rot13.
              $endgroup$
              – Brandon_J
              Mar 21 at 13:27











              0












              $begingroup$

              Working out possible solutions using rot13 and trig:



              I feel gross and like I'm doing something wrong doing this but:




              505 = 5 * 101 => V * CI




              Then you:




              rot13(V * CI) = I * PI => i * pi (getting pi honestly is the only reason I think this might be the right direction.




              Here's where the rot13(gevt) comes in I guess? Not sure where to proceed from there.






              share|improve this answer









              $endgroup$








              • 1




                $begingroup$
                rot13 of I is not I.
                $endgroup$
                – Rubio
                Mar 20 at 20:53






              • 1




                $begingroup$
                Well I'm an idiot.
                $endgroup$
                – Nick Vitha
                Mar 20 at 21:05















              0












              $begingroup$

              Working out possible solutions using rot13 and trig:



              I feel gross and like I'm doing something wrong doing this but:




              505 = 5 * 101 => V * CI




              Then you:




              rot13(V * CI) = I * PI => i * pi (getting pi honestly is the only reason I think this might be the right direction.




              Here's where the rot13(gevt) comes in I guess? Not sure where to proceed from there.






              share|improve this answer









              $endgroup$








              • 1




                $begingroup$
                rot13 of I is not I.
                $endgroup$
                – Rubio
                Mar 20 at 20:53






              • 1




                $begingroup$
                Well I'm an idiot.
                $endgroup$
                – Nick Vitha
                Mar 20 at 21:05













              0












              0








              0





              $begingroup$

              Working out possible solutions using rot13 and trig:



              I feel gross and like I'm doing something wrong doing this but:




              505 = 5 * 101 => V * CI




              Then you:




              rot13(V * CI) = I * PI => i * pi (getting pi honestly is the only reason I think this might be the right direction.




              Here's where the rot13(gevt) comes in I guess? Not sure where to proceed from there.






              share|improve this answer









              $endgroup$



              Working out possible solutions using rot13 and trig:



              I feel gross and like I'm doing something wrong doing this but:




              505 = 5 * 101 => V * CI




              Then you:




              rot13(V * CI) = I * PI => i * pi (getting pi honestly is the only reason I think this might be the right direction.




              Here's where the rot13(gevt) comes in I guess? Not sure where to proceed from there.







              share|improve this answer












              share|improve this answer



              share|improve this answer










              answered Mar 20 at 20:06









              Nick VithaNick Vitha

              2355




              2355







              • 1




                $begingroup$
                rot13 of I is not I.
                $endgroup$
                – Rubio
                Mar 20 at 20:53






              • 1




                $begingroup$
                Well I'm an idiot.
                $endgroup$
                – Nick Vitha
                Mar 20 at 21:05












              • 1




                $begingroup$
                rot13 of I is not I.
                $endgroup$
                – Rubio
                Mar 20 at 20:53






              • 1




                $begingroup$
                Well I'm an idiot.
                $endgroup$
                – Nick Vitha
                Mar 20 at 21:05







              1




              1




              $begingroup$
              rot13 of I is not I.
              $endgroup$
              – Rubio
              Mar 20 at 20:53




              $begingroup$
              rot13 of I is not I.
              $endgroup$
              – Rubio
              Mar 20 at 20:53




              1




              1




              $begingroup$
              Well I'm an idiot.
              $endgroup$
              – Nick Vitha
              Mar 20 at 21:05




              $begingroup$
              Well I'm an idiot.
              $endgroup$
              – Nick Vitha
              Mar 20 at 21:05











              0












              $begingroup$

              Tongue in cheek answer - technically works anyhow ;-)




              050/5 rdhnyf 6/5 gurersber 050 rdhnyf 6. "Cebirq" hfvat zngu xabjyrqtr naq ebg68, nf erdhrfgrq ;-)

              Rot13 a_zA-Z0-9







              share|improve this answer









              $endgroup$

















                0












                $begingroup$

                Tongue in cheek answer - technically works anyhow ;-)




                050/5 rdhnyf 6/5 gurersber 050 rdhnyf 6. "Cebirq" hfvat zngu xabjyrqtr naq ebg68, nf erdhrfgrq ;-)

                Rot13 a_zA-Z0-9







                share|improve this answer









                $endgroup$















                  0












                  0








                  0





                  $begingroup$

                  Tongue in cheek answer - technically works anyhow ;-)




                  050/5 rdhnyf 6/5 gurersber 050 rdhnyf 6. "Cebirq" hfvat zngu xabjyrqtr naq ebg68, nf erdhrfgrq ;-)

                  Rot13 a_zA-Z0-9







                  share|improve this answer









                  $endgroup$



                  Tongue in cheek answer - technically works anyhow ;-)




                  050/5 rdhnyf 6/5 gurersber 050 rdhnyf 6. "Cebirq" hfvat zngu xabjyrqtr naq ebg68, nf erdhrfgrq ;-)

                  Rot13 a_zA-Z0-9








                  share|improve this answer












                  share|improve this answer



                  share|improve this answer










                  answered Mar 20 at 22:39









                  StilezStilez

                  1,224211




                  1,224211



























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