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  2. Find the number of digits in the square root of each of the following numbers (without any calculation).
# NCERT

Q.2 Find the number of digits in the square root of each of the following numbers (without any calculation).

(i) 64

(ii) 144

(iii) 4489

(iv) 27225

(v) 390625

Answers (1)
D Devendra Khairwa

(i) 64:-     The number of digits in the square root will be

                                  \frac{n}{2} = \frac{2}{2 } = 1

 

(ii) 144:-   The number of digits in the square root will be

                                 \frac{n+1}{2} = \frac{4}{2 } = 2

 

(iii) 4489:- The number of digits in the square root will be

                             \frac{n}{2} = \frac{4}{2 } = 2

 

(iv) 27225:-  The number of digits in the square root will be

                          \frac{n +1 }{2} = \frac{6}{2 } = 3

 

(v) 390625:-   The number of digits in the square root will be

                           \frac{n }{2} = \frac{6}{2 } = 3

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