Question

How many non square numbers lie between ${90}^2$ and ${91}^2$ ?

• A. 180
• B. 160
• C. 184
• D. 164

Answer 1

The correct option is A 180

Since there are 2n non perfect square numbers between the squares of the numbers n and (n + 1).

$\therefore$ Between ${90}^2$ and ${91}^2$ we have
$\Rightarrow 2\left(90\right)=180$ non perfect square numbers.