Question

Choose the correct alternative from those given in the brackets and fill in the blanks

1)the number of digits in a square root of 7445826
is
(3,4,5,7)

2)the unit digit in the square root of 2644
(4,6,8,2)

Answer 1

Answer 1: 3

Answer 2: 2

I think...hope it helps..

Answer 2

1) The number of digits in a square root of 7445826

is :- (3,4,5,7)

Solution :-

making pairs of two from right side we get,

→ 7 - 44 - 58 - 26

since upto 7 we can go to a square of 2 and then, rest three pairs gives 3 digits in square root .

Therefore, we can conclude that, the number of digits in a square root of 7445826 is equal to 4 .

2) The unit digit in the square root of 2644

(4,6,8,2)

Solution :-

→ √2644 = ≈ 51.41

since 2644 is not a perfect square we cant decide the exact unit digit in its square root .

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