Question

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​

Answer 1

i) 1

ii) 2

iii) 2

iv) 3

v) 3

Answer 2

Answer:

(i) 64 = 8

(ii) 144 = 12

(iii) 4489 = 67

(iv) 27225 = 165

(v) 390625 = 625