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Which number will best complete the relationship given below? 21 : 36 :: 13 : ?
Question

Which number will best complete the relationship given below?
21 : 36 :: 13 : ?

A.

22

B.

23

C.

24

D.

20

Correct option is D

Let's examine the relationship between the numbers:
For the first pair 21:36
21×2=42
Subtract 6: 42−6=36
Apply the same logic to the second pair 13:?
13×2=26
Subtract 2: 26−2=24
Thus, the correct answer is (c) 24.

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