Question

1. What could be the possible 'one's' digits of the square root of each of the following numbers? (i) 9801 (ii) 99856 998001 v) 65766602
how to solve it
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Answer 1

Answer:

What could be the possible 'one's' digits of the square root of each of the followingnumbers?(i) 9801 (ii) 99856 (iii) 998001 (iv) 657666025. (i) 9801 - Here, the last digit is 1. So, its square root can have 1 or 9 as its unit digit. (ii)99856 - Here, the last digit is 6.