Question

State true or false:

The number 1057 is a perfect square.

• A. True
• B. False

Answer 1

The correct option is B False

The square of any number must end with any of the digits $0$, $1$, $4$, $5$, $6$ or $9$.
Examples:-
$1^2=1$
${12}^2=144$
${13}^2=139$
$5^2=25$
Here, the number is $1057$.
It ends with $7$. Therefore, it is not a perfect square.