Pattern Recognition: $7 star 8$ =?
$begingroup$
The following pattern was given to me by one of my friends:
If $$quad 5 star 5 = 10$$ ,
$$quad 6 star 6=18$$
$$quad 7 star 7=36$$
then $$quad 7 star 8 = ?$$
a) $54 quad$ b) $51 quad$ c) $30$
My Thoughts:
We Observe:
$$5 * 5 = 25 to 2*5 =10$$
similarly, $$6 * 6 = 36 to 3*6 =18$$
similarly, $$7 * 7 = 49 to 4*9 =36$$
$$implies 7 * 8 = 56 to 5*6 =30 implies text{option } mathbf{(c)}$$
But my friend has told its answer as $mathbf{a)54}$;
so, can anyone explain the relevant logic ...
logical-deduction pattern explanation
edited 10 mins ago
Omega Krypton
5,4742849
asked 12 mins ago
SureshSuresh
1966
$endgroup$
add a comment |
$begingroup$
The following pattern was given to me by one of my friends:
If $$quad 5 star 5 = 10$$ ,
$$quad 6 star 6=18$$
$$quad 7 star 7=36$$
then $$quad 7 star 8 = ?$$
a) $54 quad$ b) $51 quad$ c) $30$
My Thoughts:
We Observe:
$$5 * 5 = 25 to 2*5 =10$$
similarly, $$6 * 6 = 36 to 3*6 =18$$
similarly, $$7 * 7 = 49 to 4*9 =36$$
$$implies 7 * 8 = 56 to 5*6 =30 implies text{option } mathbf{(c)}$$
But my friend has told its answer as $mathbf{a)54}$;
so, can anyone explain the relevant logic ...
logical-deduction pattern explanation
edited 10 mins ago
Omega Krypton
5,4742849
asked 12 mins ago
SureshSuresh
1966
$endgroup$
add a comment |
$begingroup$
The following pattern was given to me by one of my friends:
If $$quad 5 star 5 = 10$$ ,
$$quad 6 star 6=18$$
$$quad 7 star 7=36$$
then $$quad 7 star 8 = ?$$
a) $54 quad$ b) $51 quad$ c) $30$
My Thoughts:
We Observe:
$$5 * 5 = 25 to 2*5 =10$$
similarly, $$6 * 6 = 36 to 3*6 =18$$
similarly, $$7 * 7 = 49 to 4*9 =36$$
$$implies 7 * 8 = 56 to 5*6 =30 implies text{option } mathbf{(c)}$$
But my friend has told its answer as $mathbf{a)54}$;
so, can anyone explain the relevant logic ...
logical-deduction pattern explanation
edited 10 mins ago
Omega Krypton
5,4742849
asked 12 mins ago
SureshSuresh
1966
$endgroup$
The following pattern was given to me by one of my friends:
If $$quad 5 star 5 = 10$$ ,
$$quad 6 star 6=18$$
$$quad 7 star 7=36$$
then $$quad 7 star 8 = ?$$
a) $54 quad$ b) $51 quad$ c) $30$
My Thoughts:
We Observe:
$$5 * 5 = 25 to 2*5 =10$$
similarly, $$6 * 6 = 36 to 3*6 =18$$
similarly, $$7 * 7 = 49 to 4*9 =36$$
$$implies 7 * 8 = 56 to 5*6 =30 implies text{option } mathbf{(c)}$$
But my friend has told its answer as $mathbf{a)54}$;
so, can anyone explain the relevant logic ...
logical-deduction pattern explanation
logical-deduction pattern explanation
edited 10 mins ago
Omega Krypton
5,4742849
asked 12 mins ago
SureshSuresh
1966
edited 10 mins ago
Omega Krypton
5,4742849
asked 12 mins ago
SureshSuresh
1966
edited 10 mins ago
Omega Krypton
5,4742849
edited 10 mins ago
Omega Krypton
5,4742849
edited 10 mins ago
Omega Krypton
5,4742849
5,4742849
asked 12 mins ago
SureshSuresh
1966
asked 12 mins ago
SureshSuresh
1966
asked 12 mins ago
SureshSuresh
1966
1966
add a comment |
add a comment |
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