Find the missing number?

A. 77

B. 72

C. 79

D. 71

Answer: Option B

Solution(By Examveda Team)

First Number = Square of 1 * 2 = 2.
Second Number = Square of 2 * 2 = 2 *2 * 2 = 8.
Third Number = Square of 3 * 2 = 9 * 2 = 18.
Fourth Number = Square of 4 * 2 = 16 * 2 = 32.
Fifth Number = Square of 5 * 2 = 25 * 2 = 50.
So,
Missing number = Square of 6 * 2 = 36 * 2 = 72.