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Question
Find the cube root of $$512$$ by prime factorisation method:
A
8
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Solution
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Correct option is A. 8 Resolving $$512$$ into prime factors, we get $$512=\underline {2\times 2\times 2}\times \underline {2\times 2\times 2}\times \underline {2\times 2\times 2}$$ $$\therefore \sqrt [3]{512}=(2\times 2\times 2)=8$$
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