By repeated subtraction of odd numbers starting from 1, find whether the following numbers are perfect squares or not? If the number is a perfect square then find its square root.

(ii) 55

Answers (1)

We have \sqrt{55}.   Then

55 - 1 = 54

54 - 3 = 51

51 - 5 = 46

46 - 7 = 39

39 - 9 = 30

30 - 11 = 19

19 - 13 =  6.

Thus the given number is not a perfect square.

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