$(5^{- 2})^{- 3}$ can be expressed as

5^{6}

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5^{- 6}

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5^{- 5}

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5^{5}

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Solution

The correct option is A $5^{6}$
Uaing Laws of Exponents , we know that $(a^{m})^{n} = a^{m n}$
$\Rightarrow$ $(5^{- 2})^{- 3}$ $= 5^{(- 2) \times (- 3)}$ $= 5^{6}$

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