Question

maths class 8th ch no6 ex no 6.4 plese answer




Question 2:

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

(1)

(iii)

(v)

64

4489

390625

144

(iv) 27225​

Answer 1

Answer:

Correct option is

D

1;2;2

64⇒ Here, n=2(even)

∴ Number of digits in the square root of 64

=

2

n

=

2

2

=1.

144⇒ Here, n=3(odd)

∴ Number of digits in the square root of 144

=

2

n+1

=

2

3+1

=2

4489⇒ Here, n=4(even)

∴ Number of digits in the square root of 4489

=

2

n

=

2

4

=2