R S Aggarwal Solutions for Chapter: Squares and Square Roots, Exercise 9: TEST PAPER

Which of the following is the square of an even number?

What least number must be added to $521$ to make it a perfect square?

What least number must be subtracted from $178$ to make it a perfect square?

$\sqrt{72}\times \sqrt{98}=?$

$1+3+5+7+9+11+13=$ (_____)${}^2$

$\sqrt{1681}=$_____

The smallest square number exactly divisible by $2, 4, 6$ is _____.

A given number is a perfect square having $n$ digits, where $n$ is odd. Then, its square root will have _____ digits.