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2.The following numbers are obviously not perfect squares. Give reason.

(i) 1057

(ii) 23453

(iii) 7928

(iv) 222222

(v) 64000

(vi) 89722

(vii) 222000

(viii) 505050

Answers (1)

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We know that only the numbers that end with 0, 1, 4, 5, 6 or 9 at units place can be perfectly square numbers. 

Also, a perfectly square number has a number of zeros in multiple of 2.

Since these numbers have either odd no. of zeros or their unit place is 2, 3, 7, 8 thus they are not perfectly square numbers.

Posted by

Devendra Khairwa

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