Question

7 5 (31), 8 3 (81), 8 9 (72), 7 7(?)

Answer 1

Answer:

Answer is 97

Step-by-step explanation:

We are given,

5  7  ( 31 )

8  3  ( 81 )

8  9  ( 72 )

To find: 7  7  ( ? )

We see given numbers follow some pattern which is given below

A). ( 3 + 1 ) - ( 7 - 5 ) = 4 - ( 2 ) = 2

B). ( 8 + 1 ) - ( 8 - 3 ) = 9 - ( 5 ) = 4

C). ( 7 + 2 ) - ( 9 - 8 ) = 9 - ( 1 ) = 8

D). Say, the sum of digits of two digit number be x

       x - ( 7 - 7 ) = 16

       x = 16

So, we check which two digits sum is 16.

We get, 97 or 88 or 79.

Therefore, Answer is 97