Question

Find the square root of 7921.

• A. 89
• B. 90
• C. 91
• D. 92

Answer 1

The correct option is A

89

We use long division method to find the square root of 7921. For that, we will group 2 numbers from right to left and then proceed with the division.

$\begin{array}{cc}& 89\\ 8& \overline{79}\overline{21}\\ & -64\\ 169& 1521\\ & -1521\\ & 0\end{array}$

Hence, the square root of 7921 is 89.