The following numbers are not square numbers. Give the reason.

i) 64000

ii) 89722 [2 MARKS]

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Solution

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i) 64000 is not a perfect square number, because the number of zeroes ending in 64000 is 3 which is an odd number and the number of zeroes at the end of a perfect square is always even.

ii) 89722 is not a perfect square because this number ends in 2.

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The following number is obviously not a perfect square. Give reasons.

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