Question

In the following question, there are two words to left of the sign ': :' which are connected in some way. The same relationship is shared by the third word and one of the four alternatives given below under it. Find the correct alternative.

$40:21::72:?$

• A. $42$
• B. $35$
• C. $36$
• D. $37$

Answer 1

The correct option is D $37$

Logic is $x:\frac{x}{2}+1$
therefore, $40:\frac{40}{2}+1=40:20+1=40:21$
Similarly $72:\frac{72}{2}=72:36+1=72:37$

Correct answer is option D.