Question

In the following question, select the number from the given options which follows the same relationship as shared between the first two numbers.

$30:42::56:?$

• A. $92$
• B. $21$
• C. $38$
• D. $72$
• E. $40$

Answer 1

The correct option is D $72$

The numbers are squares of different numbers plus the number itself.
$30:42::56:72$
$\downarrow \downarrow \downarrow \downarrow$
$5^2+56^2+67^2+78^2+8$

$\therefore$ Correct answer is option $D$