What could be the possible ‘one’s’ digits of the square root of each of the following numbers?

CBSE Class 8 CBSE Class 8 Maths
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1

What could be the possible ‘one’s’ digits of the square root of each of the following numbers?
(i) 9801
(ii) 99856
(iii) 998001
(iv) 657666025

2

The possible ‘one’s’ digits of the square root of the numbers :
(i) 9801 is 1 or 9
(ii) 99856 is 4 or 6
(iii) 998001 is 1 or 9
(iv) 657666025 is 5