Question

The number that must be subtracted from $16161$ to get a perfect square is ________.

• A. $31$
• B. $32$
• C. $33$
• D. $34$

Answer 1

The correct option is B $32$

Let the number is $x$

Finding the square root of $16161$

$\sqrt{16161}=127.1259$

Finding the square of $127$

${127}^2=16129$

$x=16161-16129$

$x=32$