If a number of n-digits is perfect square and n is an odd number, then which of the following is the number of digits of its square root?
n2
n+12
n−12
2n
A
n2
B
n+12
C
2n
D
n−12
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Solution
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no of digits in a perfect square is n
If n is odd then no of digits in its square roots is n+12
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