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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.

6 : 18 : : 4 : ?

Option:
A. 2
B. 6
C. 8
D. 16
Answer: C . 8

Justification:

The relationship is x : x2/2.

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