Which of the following can also be represented as $a^{m n}$ ?

a^{m + n}

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(a^{m})^{n}

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a^{m \div n}

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a^{m - n}

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Solution

The correct option is B $(a^{m})^{n}$
$a^{m n} = (a^{m})^{n}$ .
This is the power law of exponents.
So, option $B$ is correct.

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