Number analogy section deals with two types of questions:
I. Choosing a similarly related pair as the given number pair on the basis of the relation between the numbers in each pair.
II. Choosing a number similar to a group of numbers on the basis of certain common properties that they possess.

In following number series, two terms have been put within brackets. Choose the appropriate option

9: 100: 11: ?

A. 115
B. 121
C. 134
D. 144
Answer: A . 144

Justification: series is like - 9, 10^2, 11, 12^2