13, 29, 15, 26, 17, 23, 19, ... choose which pair of numbers comes next?

A. 21, 23

B. 20, 21

C. 20, 17

D. 25, 27

E. 22, 20

Answer: Option B

Solution(By Examveda Team)

Here, there are two alternating patterns, with every other number following a different pattern. The first pattern begins with 13 and adds 2 to each number to arrive at the next; the alternating pattern begins with 29 and subtracts 3 each time.