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Finding the Square of a Number

180 is a perf...

Question

180 is a perfect square.

A

True

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B

False

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Solution

180 = $2 \times 2 \times 3 \times 3 \times 5$

$= 2 \times 3 \times 5$

Since all the prime factors of 180 cannot be grouped in pairs (5 is left out ), 180 is not a perfect square.

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