This Bheja Fry question I found when I was browsing internet.
Question
If 9 + 1 = 64
8 + 2 = 36
7 + 3 = 16
Then
6 + 4 = ??
Answer
We know 9 + 1 is 10
but given answer as 64
We know 64 is the square of 8
==>> 9 - 1 = 8
==>> 8 ^ 2 = 64
So, we rewrite 9 - 1 = 64
We know 8 + 2 is 10
But given answer is 36
We know 36 is the square of 6
==>> 8 - 2 = 6
==>> 6 ^ 2 = 36
So, we rewrite 8 - 2 = 36
We know 7 + 3 = 10
But given 7 + 3 = 16
We know 16 is the square of 4
==>> 7 - 3 = 4
==>> 4 ^ 2 = 16
So, we write 7 + 3 = 16
Finally 6 + 4 = ??
We know 6 + 4 is 10
But according to logic it is not the answer !!!
We know 6 - 4 = 2
==>> 2 ^ 2 = 4
So we rewrite 6 + 4 = 4