Question

In each of the following question, select the related number from the given alternatives.
$64$ $:$ $144$ $:$ $:$ $256$ $:$ $?$

• A. $16$
• B. $32$
• C. $400$
• D. $336$

Answer 1

The correct option is C $400$

$8^2=64$

$(8+4{)}^2={12}^2=144$

Similarly,

${16}^2=256$

$(16+4{)}^2={20}^2=400$

Hence, C is the correct option.