Number Series - Verbal and Reasoning

Q1:

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

A 205

B 208

C 210

D 211

ANS:D - 211

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.