Question

please answer me friends...........

Answer 1

2×3 = 6 , 6 + 2 = 8


4×5 = 20 , 20 + 12 = 32


6 ×7 = 42 , 42 + 20 = 72


7 × 8 = 56, 56 + 26 = 82


8 × 9 = 72, 72 + 30 = 102 ( answer )


here is even sequence of difference.


2 - 12 = 10

12 - 20 = 8

20 - 26 = 6

26 - 30 = 4


sequence , 10 , 8 , 6 , 4 .....


hence the required number = 102


【 hope it helps 】