Look at this series: 201, 202, 204, 207, ... What number should come next?

A. 205
B. 208
C. 210
D. 211

Answer: Option D

Explanation:


In this addition series, 1 is added to the first number; 2 is added to the second number; 3 is added to the third number; 4 is added to the fourth number; and go on.