Find 108 by using 3,4,6
$begingroup$
Assemble a formula using the numbers $3$, $4$ and $6$ in any order to make 108.
You may use the operations;
$x + y$
$x - y$
$x times y$
$x div y$
$x!$
$sqrt{x}$
$sqrt[leftroot{-2}uproot{2}x]{y}$
$x^y$
- Brackets to clarify order of operations "(",")"
- Concatenate two or more of the three digits you start with (concatenation of numbers from calculations is not permitted)
as long as all operands are either $3$, $4$ and $6$.
Note that double, triple, etc. factorials (n-druple-factorials) are not allowed though factorials of factorials are fine, such as $((6-3)!)! = 6!$.
mathematics logical-deduction
$endgroup$
add a comment |
$begingroup$
Assemble a formula using the numbers $3$, $4$ and $6$ in any order to make 108.
You may use the operations;
$x + y$
$x - y$
$x times y$
$x div y$
$x!$
$sqrt{x}$
$sqrt[leftroot{-2}uproot{2}x]{y}$
$x^y$
- Brackets to clarify order of operations "(",")"
- Concatenate two or more of the three digits you start with (concatenation of numbers from calculations is not permitted)
as long as all operands are either $3$, $4$ and $6$.
Note that double, triple, etc. factorials (n-druple-factorials) are not allowed though factorials of factorials are fine, such as $((6-3)!)! = 6!$.
mathematics logical-deduction
$endgroup$
1
$begingroup$
If I could, I would have done something like $$3times style{display: inline-block; transform: rotate(180deg)}{4}times 6=108$$ since the upside down $4$ looks a bit like a $6$.
$endgroup$
– user477343
2 hours ago
2
$begingroup$
@user477343 or even $$3 times 4 times 9 = 108$$ since the upside down $6$ is very much like a $9$.
$endgroup$
– Weather Vane
1 hour ago
$begingroup$
@WeatherVane Of course! Huh... funny how I saw what was obscure as opposed to what was actually just plain simple xD
$endgroup$
– user477343
1 hour ago
2
$begingroup$
@user477343 ah but it took yours to make me think of it.
$endgroup$
– Weather Vane
1 hour ago
$begingroup$
@WeatherVane :)
$endgroup$
– user477343
1 hour ago
add a comment |
$begingroup$
Assemble a formula using the numbers $3$, $4$ and $6$ in any order to make 108.
You may use the operations;
$x + y$
$x - y$
$x times y$
$x div y$
$x!$
$sqrt{x}$
$sqrt[leftroot{-2}uproot{2}x]{y}$
$x^y$
- Brackets to clarify order of operations "(",")"
- Concatenate two or more of the three digits you start with (concatenation of numbers from calculations is not permitted)
as long as all operands are either $3$, $4$ and $6$.
Note that double, triple, etc. factorials (n-druple-factorials) are not allowed though factorials of factorials are fine, such as $((6-3)!)! = 6!$.
mathematics logical-deduction
$endgroup$
Assemble a formula using the numbers $3$, $4$ and $6$ in any order to make 108.
You may use the operations;
$x + y$
$x - y$
$x times y$
$x div y$
$x!$
$sqrt{x}$
$sqrt[leftroot{-2}uproot{2}x]{y}$
$x^y$
- Brackets to clarify order of operations "(",")"
- Concatenate two or more of the three digits you start with (concatenation of numbers from calculations is not permitted)
as long as all operands are either $3$, $4$ and $6$.
Note that double, triple, etc. factorials (n-druple-factorials) are not allowed though factorials of factorials are fine, such as $((6-3)!)! = 6!$.
mathematics logical-deduction
mathematics logical-deduction
edited 2 hours ago
JonMark Perry
20.8k64199
20.8k64199
asked 2 hours ago
OrayOray
16.2k437157
16.2k437157
1
$begingroup$
If I could, I would have done something like $$3times style{display: inline-block; transform: rotate(180deg)}{4}times 6=108$$ since the upside down $4$ looks a bit like a $6$.
$endgroup$
– user477343
2 hours ago
2
$begingroup$
@user477343 or even $$3 times 4 times 9 = 108$$ since the upside down $6$ is very much like a $9$.
$endgroup$
– Weather Vane
1 hour ago
$begingroup$
@WeatherVane Of course! Huh... funny how I saw what was obscure as opposed to what was actually just plain simple xD
$endgroup$
– user477343
1 hour ago
2
$begingroup$
@user477343 ah but it took yours to make me think of it.
$endgroup$
– Weather Vane
1 hour ago
$begingroup$
@WeatherVane :)
$endgroup$
– user477343
1 hour ago
add a comment |
1
$begingroup$
If I could, I would have done something like $$3times style{display: inline-block; transform: rotate(180deg)}{4}times 6=108$$ since the upside down $4$ looks a bit like a $6$.
$endgroup$
– user477343
2 hours ago
2
$begingroup$
@user477343 or even $$3 times 4 times 9 = 108$$ since the upside down $6$ is very much like a $9$.
$endgroup$
– Weather Vane
1 hour ago
$begingroup$
@WeatherVane Of course! Huh... funny how I saw what was obscure as opposed to what was actually just plain simple xD
$endgroup$
– user477343
1 hour ago
2
$begingroup$
@user477343 ah but it took yours to make me think of it.
$endgroup$
– Weather Vane
1 hour ago
$begingroup$
@WeatherVane :)
$endgroup$
– user477343
1 hour ago
1
1
$begingroup$
If I could, I would have done something like $$3times style{display: inline-block; transform: rotate(180deg)}{4}times 6=108$$ since the upside down $4$ looks a bit like a $6$.
$endgroup$
– user477343
2 hours ago
$begingroup$
If I could, I would have done something like $$3times style{display: inline-block; transform: rotate(180deg)}{4}times 6=108$$ since the upside down $4$ looks a bit like a $6$.
$endgroup$
– user477343
2 hours ago
2
2
$begingroup$
@user477343 or even $$3 times 4 times 9 = 108$$ since the upside down $6$ is very much like a $9$.
$endgroup$
– Weather Vane
1 hour ago
$begingroup$
@user477343 or even $$3 times 4 times 9 = 108$$ since the upside down $6$ is very much like a $9$.
$endgroup$
– Weather Vane
1 hour ago
$begingroup$
@WeatherVane Of course! Huh... funny how I saw what was obscure as opposed to what was actually just plain simple xD
$endgroup$
– user477343
1 hour ago
$begingroup$
@WeatherVane Of course! Huh... funny how I saw what was obscure as opposed to what was actually just plain simple xD
$endgroup$
– user477343
1 hour ago
2
2
$begingroup$
@user477343 ah but it took yours to make me think of it.
$endgroup$
– Weather Vane
1 hour ago
$begingroup$
@user477343 ah but it took yours to make me think of it.
$endgroup$
– Weather Vane
1 hour ago
$begingroup$
@WeatherVane :)
$endgroup$
– user477343
1 hour ago
$begingroup$
@WeatherVane :)
$endgroup$
– user477343
1 hour ago
add a comment |
3 Answers
3
active
oldest
votes
$begingroup$
Could this be
$frac{6^3}{sqrt{4}} = frac{216}{2} = 108$?
@Oray found another one, which might possibly be
$6^{sqrt{4}} times 3 = 6^2 times 3 = 36 times 3 = 108$.
$endgroup$
$begingroup$
good finding! mine was different but this seems right too :)
$endgroup$
– Oray
2 hours ago
$begingroup$
Thank you, @Oray!!
$endgroup$
– El-Guest
2 hours ago
$begingroup$
@Oray: was this second one the one that you found?
$endgroup$
– El-Guest
2 hours ago
$begingroup$
no actually :D it was a bit more complicated.
$endgroup$
– Oray
2 hours ago
add a comment |
$begingroup$
I have found this solution
$6 times (4! - 3!) = 6 times (24 - 6) = 6 times 18 = 108$
$endgroup$
add a comment |
$begingroup$
In high school I used to play a game with my buddies where we tried to make valid arithmetic expressions out of licence plates of passing cars. The rules were pretty much similar except that you couldn't rearrange or duplicate (or omit) any of the digits. In time we got pretty good at it, basically solving any licence plate in under 10 seconds; most under 5. Except for the ones that couldn't be solved, of course.
Anyways, with your constraints (limitless numbers, can be rearranged, can be combined) there are like a zillion possible solutions.
Here's the simplest thing I could think of:
34 + 66 + 4 + 4 = 108
Here's another one without concatenation:
(4 + 3 + 3) * (4 + 6) + 4 + 4 = 108
Or maybe:
(4*6+3)*4 = 108
I could go on and on, and I haven't even touched on the advanced operators...
$endgroup$
$begingroup$
The second answer here is not "using the numbers $3$, $4$ and $6$".
$endgroup$
– Weather Vane
48 mins ago
$begingroup$
@WeatherVane - Do you mean that I had to use all of them? It's not really clear from the question. I understood that those are the only allowed digits, but that I can use (or not use) as many of each as I want.
$endgroup$
– Vilx-
4 mins ago
$begingroup$
@WeatherVane - Anyways, updated it to use all the numbers.
$endgroup$
– Vilx-
2 mins ago
add a comment |
Your Answer
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3 Answers
3
active
oldest
votes
3 Answers
3
active
oldest
votes
active
oldest
votes
active
oldest
votes
$begingroup$
Could this be
$frac{6^3}{sqrt{4}} = frac{216}{2} = 108$?
@Oray found another one, which might possibly be
$6^{sqrt{4}} times 3 = 6^2 times 3 = 36 times 3 = 108$.
$endgroup$
$begingroup$
good finding! mine was different but this seems right too :)
$endgroup$
– Oray
2 hours ago
$begingroup$
Thank you, @Oray!!
$endgroup$
– El-Guest
2 hours ago
$begingroup$
@Oray: was this second one the one that you found?
$endgroup$
– El-Guest
2 hours ago
$begingroup$
no actually :D it was a bit more complicated.
$endgroup$
– Oray
2 hours ago
add a comment |
$begingroup$
Could this be
$frac{6^3}{sqrt{4}} = frac{216}{2} = 108$?
@Oray found another one, which might possibly be
$6^{sqrt{4}} times 3 = 6^2 times 3 = 36 times 3 = 108$.
$endgroup$
$begingroup$
good finding! mine was different but this seems right too :)
$endgroup$
– Oray
2 hours ago
$begingroup$
Thank you, @Oray!!
$endgroup$
– El-Guest
2 hours ago
$begingroup$
@Oray: was this second one the one that you found?
$endgroup$
– El-Guest
2 hours ago
$begingroup$
no actually :D it was a bit more complicated.
$endgroup$
– Oray
2 hours ago
add a comment |
$begingroup$
Could this be
$frac{6^3}{sqrt{4}} = frac{216}{2} = 108$?
@Oray found another one, which might possibly be
$6^{sqrt{4}} times 3 = 6^2 times 3 = 36 times 3 = 108$.
$endgroup$
Could this be
$frac{6^3}{sqrt{4}} = frac{216}{2} = 108$?
@Oray found another one, which might possibly be
$6^{sqrt{4}} times 3 = 6^2 times 3 = 36 times 3 = 108$.
edited 2 hours ago
answered 2 hours ago
El-GuestEl-Guest
21.8k35092
21.8k35092
$begingroup$
good finding! mine was different but this seems right too :)
$endgroup$
– Oray
2 hours ago
$begingroup$
Thank you, @Oray!!
$endgroup$
– El-Guest
2 hours ago
$begingroup$
@Oray: was this second one the one that you found?
$endgroup$
– El-Guest
2 hours ago
$begingroup$
no actually :D it was a bit more complicated.
$endgroup$
– Oray
2 hours ago
add a comment |
$begingroup$
good finding! mine was different but this seems right too :)
$endgroup$
– Oray
2 hours ago
$begingroup$
Thank you, @Oray!!
$endgroup$
– El-Guest
2 hours ago
$begingroup$
@Oray: was this second one the one that you found?
$endgroup$
– El-Guest
2 hours ago
$begingroup$
no actually :D it was a bit more complicated.
$endgroup$
– Oray
2 hours ago
$begingroup$
good finding! mine was different but this seems right too :)
$endgroup$
– Oray
2 hours ago
$begingroup$
good finding! mine was different but this seems right too :)
$endgroup$
– Oray
2 hours ago
$begingroup$
Thank you, @Oray!!
$endgroup$
– El-Guest
2 hours ago
$begingroup$
Thank you, @Oray!!
$endgroup$
– El-Guest
2 hours ago
$begingroup$
@Oray: was this second one the one that you found?
$endgroup$
– El-Guest
2 hours ago
$begingroup$
@Oray: was this second one the one that you found?
$endgroup$
– El-Guest
2 hours ago
$begingroup$
no actually :D it was a bit more complicated.
$endgroup$
– Oray
2 hours ago
$begingroup$
no actually :D it was a bit more complicated.
$endgroup$
– Oray
2 hours ago
add a comment |
$begingroup$
I have found this solution
$6 times (4! - 3!) = 6 times (24 - 6) = 6 times 18 = 108$
$endgroup$
add a comment |
$begingroup$
I have found this solution
$6 times (4! - 3!) = 6 times (24 - 6) = 6 times 18 = 108$
$endgroup$
add a comment |
$begingroup$
I have found this solution
$6 times (4! - 3!) = 6 times (24 - 6) = 6 times 18 = 108$
$endgroup$
I have found this solution
$6 times (4! - 3!) = 6 times (24 - 6) = 6 times 18 = 108$
answered 2 hours ago
Weather VaneWeather Vane
2,387112
2,387112
add a comment |
add a comment |
$begingroup$
In high school I used to play a game with my buddies where we tried to make valid arithmetic expressions out of licence plates of passing cars. The rules were pretty much similar except that you couldn't rearrange or duplicate (or omit) any of the digits. In time we got pretty good at it, basically solving any licence plate in under 10 seconds; most under 5. Except for the ones that couldn't be solved, of course.
Anyways, with your constraints (limitless numbers, can be rearranged, can be combined) there are like a zillion possible solutions.
Here's the simplest thing I could think of:
34 + 66 + 4 + 4 = 108
Here's another one without concatenation:
(4 + 3 + 3) * (4 + 6) + 4 + 4 = 108
Or maybe:
(4*6+3)*4 = 108
I could go on and on, and I haven't even touched on the advanced operators...
$endgroup$
$begingroup$
The second answer here is not "using the numbers $3$, $4$ and $6$".
$endgroup$
– Weather Vane
48 mins ago
$begingroup$
@WeatherVane - Do you mean that I had to use all of them? It's not really clear from the question. I understood that those are the only allowed digits, but that I can use (or not use) as many of each as I want.
$endgroup$
– Vilx-
4 mins ago
$begingroup$
@WeatherVane - Anyways, updated it to use all the numbers.
$endgroup$
– Vilx-
2 mins ago
add a comment |
$begingroup$
In high school I used to play a game with my buddies where we tried to make valid arithmetic expressions out of licence plates of passing cars. The rules were pretty much similar except that you couldn't rearrange or duplicate (or omit) any of the digits. In time we got pretty good at it, basically solving any licence plate in under 10 seconds; most under 5. Except for the ones that couldn't be solved, of course.
Anyways, with your constraints (limitless numbers, can be rearranged, can be combined) there are like a zillion possible solutions.
Here's the simplest thing I could think of:
34 + 66 + 4 + 4 = 108
Here's another one without concatenation:
(4 + 3 + 3) * (4 + 6) + 4 + 4 = 108
Or maybe:
(4*6+3)*4 = 108
I could go on and on, and I haven't even touched on the advanced operators...
$endgroup$
$begingroup$
The second answer here is not "using the numbers $3$, $4$ and $6$".
$endgroup$
– Weather Vane
48 mins ago
$begingroup$
@WeatherVane - Do you mean that I had to use all of them? It's not really clear from the question. I understood that those are the only allowed digits, but that I can use (or not use) as many of each as I want.
$endgroup$
– Vilx-
4 mins ago
$begingroup$
@WeatherVane - Anyways, updated it to use all the numbers.
$endgroup$
– Vilx-
2 mins ago
add a comment |
$begingroup$
In high school I used to play a game with my buddies where we tried to make valid arithmetic expressions out of licence plates of passing cars. The rules were pretty much similar except that you couldn't rearrange or duplicate (or omit) any of the digits. In time we got pretty good at it, basically solving any licence plate in under 10 seconds; most under 5. Except for the ones that couldn't be solved, of course.
Anyways, with your constraints (limitless numbers, can be rearranged, can be combined) there are like a zillion possible solutions.
Here's the simplest thing I could think of:
34 + 66 + 4 + 4 = 108
Here's another one without concatenation:
(4 + 3 + 3) * (4 + 6) + 4 + 4 = 108
Or maybe:
(4*6+3)*4 = 108
I could go on and on, and I haven't even touched on the advanced operators...
$endgroup$
In high school I used to play a game with my buddies where we tried to make valid arithmetic expressions out of licence plates of passing cars. The rules were pretty much similar except that you couldn't rearrange or duplicate (or omit) any of the digits. In time we got pretty good at it, basically solving any licence plate in under 10 seconds; most under 5. Except for the ones that couldn't be solved, of course.
Anyways, with your constraints (limitless numbers, can be rearranged, can be combined) there are like a zillion possible solutions.
Here's the simplest thing I could think of:
34 + 66 + 4 + 4 = 108
Here's another one without concatenation:
(4 + 3 + 3) * (4 + 6) + 4 + 4 = 108
Or maybe:
(4*6+3)*4 = 108
I could go on and on, and I haven't even touched on the advanced operators...
edited 2 mins ago
answered 1 hour ago
Vilx-Vilx-
1315
1315
$begingroup$
The second answer here is not "using the numbers $3$, $4$ and $6$".
$endgroup$
– Weather Vane
48 mins ago
$begingroup$
@WeatherVane - Do you mean that I had to use all of them? It's not really clear from the question. I understood that those are the only allowed digits, but that I can use (or not use) as many of each as I want.
$endgroup$
– Vilx-
4 mins ago
$begingroup$
@WeatherVane - Anyways, updated it to use all the numbers.
$endgroup$
– Vilx-
2 mins ago
add a comment |
$begingroup$
The second answer here is not "using the numbers $3$, $4$ and $6$".
$endgroup$
– Weather Vane
48 mins ago
$begingroup$
@WeatherVane - Do you mean that I had to use all of them? It's not really clear from the question. I understood that those are the only allowed digits, but that I can use (or not use) as many of each as I want.
$endgroup$
– Vilx-
4 mins ago
$begingroup$
@WeatherVane - Anyways, updated it to use all the numbers.
$endgroup$
– Vilx-
2 mins ago
$begingroup$
The second answer here is not "using the numbers $3$, $4$ and $6$".
$endgroup$
– Weather Vane
48 mins ago
$begingroup$
The second answer here is not "using the numbers $3$, $4$ and $6$".
$endgroup$
– Weather Vane
48 mins ago
$begingroup$
@WeatherVane - Do you mean that I had to use all of them? It's not really clear from the question. I understood that those are the only allowed digits, but that I can use (or not use) as many of each as I want.
$endgroup$
– Vilx-
4 mins ago
$begingroup$
@WeatherVane - Do you mean that I had to use all of them? It's not really clear from the question. I understood that those are the only allowed digits, but that I can use (or not use) as many of each as I want.
$endgroup$
– Vilx-
4 mins ago
$begingroup$
@WeatherVane - Anyways, updated it to use all the numbers.
$endgroup$
– Vilx-
2 mins ago
$begingroup$
@WeatherVane - Anyways, updated it to use all the numbers.
$endgroup$
– Vilx-
2 mins ago
add a comment |
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1
$begingroup$
If I could, I would have done something like $$3times style{display: inline-block; transform: rotate(180deg)}{4}times 6=108$$ since the upside down $4$ looks a bit like a $6$.
$endgroup$
– user477343
2 hours ago
2
$begingroup$
@user477343 or even $$3 times 4 times 9 = 108$$ since the upside down $6$ is very much like a $9$.
$endgroup$
– Weather Vane
1 hour ago
$begingroup$
@WeatherVane Of course! Huh... funny how I saw what was obscure as opposed to what was actually just plain simple xD
$endgroup$
– user477343
1 hour ago
2
$begingroup$
@user477343 ah but it took yours to make me think of it.
$endgroup$
– Weather Vane
1 hour ago
$begingroup$
@WeatherVane :)
$endgroup$
– user477343
1 hour ago