Question

How many digits will there be in the square root of 729?

• A. 3
• B. 4
• C. 2
• D. 1

Answer 1

The correct option is C

2

$\sqrt{729}=27$. 29 will for one group and 7 will form the next group. As a total of 2 groups are formed, the square root will consist of 2 digits.
Alternatively, since n = 3, using $\frac{n+1}{2}$ we get that the number of digits in the sqaure root will be 2.