Question

Without calculating , write the number of digits in the square root of $1000000.$

• A. $3$ digit
• B. $4$ digit
• C. $5$ digit
• D. $7$digit

Answer 1

Answer: (B)

$4$ digit

If number of digits in the given number is even, n

Then number of digits in square root $=$ $\frac{n}{2}$

If number of digits in the given number is odd, n

Then number of digits in square root $=$ $\frac{n+1}{2}$

Number of digits in square root $=$ $\frac{7+1}{2}$ $=$ $4$

Hence, Option B is correct.