Find the missing number?

A. 3

B. 4

C. 1

D. 5

Answer: Option D

Solution(By Examveda Team)

In each triangle, the number at the apex of the triangle equals the average of the two numbers at the bottom. So,

(5 + x)/2 = 5
5 + x = 10
x = 5.
Missing number = 5.