Find the missing number?

A. 587

B. 611

C. 601

D. 598

Answer: Option C

Solution(By Examveda Team)

Left to right, double each number and add 7 to give the next number down.

12
12 * 2 + 7= 31.
31 * 2 + 7 = 69.
69 * 2 + 7 = 145.
297 * 2 + 7 = 601.
Missing Number = 601.