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.

25 : 125 : : 36 : ?

A. 180
B. 206
C. 216
D. 318
Answer: C . 216

Justification: The relationship is x2 : x3.