following the Q1 answer in all questions
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Exercise 6.3 Part 1
Question 1: What could be the possible ‘one’s’ digits of the square root of each of the following numbers?
(i) 9801
Answer: 1 and 9.
Explanation: Since 12 and 92 give 1 at unit’s place, so these are the possible values of unit digit of the square root.
(ii) 99856
Answer: 4 and 6
Explanation: Since, 42 = 16 and 62 = 36, hence, 4 and 6 are possible digits
(iii) 998001
Answer: 1 and 9
(iv) 657666025
Answer: 5
Explanation: Since, 52 = 25, hence 5 is possible.
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