Question

In the given question, select the related number from the given alternatives.
$11$ $:$ $121$ $:$ $110$ $:$ $:$ $15$ $:$ $225$ $:$ $210$ $:$ $:$ $?$

• A. $9$ $:$ $81$ $:$ $70$
• B. $19$ $:$ $361$ $:$ $342$
• C. $17$ $:$ $288$ $:$ $272$
• D. $16$ $:$ $255$ $:$ $239$

Answer 1

Answer: (B)

$19$ $:$ $361$ $:$ $342$

$121={11}^2,110={11}^2-11,$

$225={15}^2,210={15}^2-15$

Similarly,

$361={19}^2,342={19}^2-19$

Hence, B is the correct option.