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Question

The cube root of square of 27 is _____

A
27
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B
729
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C
3
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D
9
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Solution

The correct option is D 9
Square of 27 is 272=27×27=729.

Now, 729 can be written as:
729=9×9×9 =93

3729=393=9

So, the cube root of square of 27 is 9.

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