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Inverse of a Matrix

If the cube o...

Question

If the cube of $n$ is $729$ . Find the square root of $n$ .

9

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7

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3

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None of the above

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Solution

The correct option is D $3$
$n^{3} = 729$
$⟹ n = 9$
$⟹ \sqrt{n} = 3$ or $- 3.$

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