Find the missing number?

A. 4

B. 8

C. 5

D. 2

Answer: Option C

Solution(By Examveda Team)

As you go left to right, alternately subtract 8 to give the next number, then divide by 2.

Now,
26 is divide by 2 to give 13. So,
Missing number = 13 - 8 = 21.