Select the option that is related to the third number in the same way as the second number is related to the first number.
70 : 8 : : 87 : ?

Option
a) 8
b) 9
c) 6
d) 4

Solution

First number = Square of Second + 6
8² + 6 = 64 + 6 = 70
Apply same logic = 9² + 6 = 81 + 6 = 87
Ans = 9

Answer : b) 9