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  • By repeated subtraction of odd numbers starting from find 1, whether the following numbers are perfect squares or not? If the number is a perfect square then find its square root. (v) 90

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.

(v) 90

Answers (1)

best_answer

We have \sqrt{90},  then 

90 - 1 = 89

89 - 3 = 86

86 - 5 =  81

81 - 7 = 74

74 - 9 = 65

65 - 11 = 54

54 - 13 = 41

41 - 15 = 26 ;       

26 - 17 = 9.

So from the all above calculation, we can say that the given number is not a perfect square.

Posted by

Devendra Khairwa

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