Each of the following questions has a Magical circle with question mark/s. Replace the question mark/s by choosing the correct response from amongst the alternatives given.

Options

A. 32
B. 144
C. 121
D. 256

Answer

D

Explanation

The pattern is as follows:
In the first figure, `[ (6+12)/(2)]^2 = 81`
In the second figure, `[(5+3)/(2)]^2 = 16`
Therefore, Missing Number in the third figure `= [ (15 + 17)/(2)]^2 = 256`