Question

In each of the following question, select the related number from the given alternatives.
$4$ $:$ $20$ $:$ $:$ $6$ $:$ $?$

• A. $36$
• B. $12$
• C. $8$
• D. $42$

Answer 1

The correct option is D $42$

In first part $4::20$

$20=4^2+4$

Similarly for second part $6:?$

$?=6^2+6=42$

therefore $6:42$

option D