Question

please solve qustion​

Answer 1

Given:

• A series pattern is given.

           7, 5 = 31

           8, 3, = 81

           9,8 = 72

           7, 7 = ?

To Find:

• Missing number of the series.

Solution:

Following pattern is used in this series

   Let's take 7, 5 = 31

1. First add the digits of the resultant number

        ⇒      3+1 = 4

2. After that subtract the bigger number and add smaller number

       ⇒    4 - 7 + 5 = 9-7 = 2

Now, for remaining numbers by using above pattern

     8, 3, = 81

       ⇒         (8+1)-(8-3)= 9- 8 + 3 = 4  ( 2×2)

     9,8 = 72

      ⇒         (7+2)-(9-8) = 9 -9 + 8 = 8   (4 × 2)

     7, 7 = ?

Here

      ⇒         ? - 7 -7 = ? (It should be 2 times of 8 = 16)

So the missing number is ( 9 + 7 = 16 )

Thus, the answer is 97