Find the missing number?

A. 1

B. 4

C. 7

D. 12

Answer: Option B

Solution(By Examveda Team)

Add together the four outer numbers of each grid. This answer is the central number of the grid one place further clockwise. So,

8 +3 + 6 + x = 21
x = 21 - 17 = 4
Missing Element = 17.