Question

In each of the following question, select the related number from the given alternatives.
$16$ $:$ $49$ $:$ $:$ $100$ $:$ $?$

• A. $85$
• B. $121$
• C. $144$
• D. $169$

Answer 1

Answer: (D)

$169$

$4^2=16$

$(4+3{)}^2=7^2=49$

Similarly,

${10}^2=100$

$(10+3{)}^2={13}^2=169$

Hence, D is the correct option.