Question
Find the cube root of $64$ by prime factorisation method.
✓
Answer
Prime factorisation of $64$ is
$2 \times 2 \times 2 \times 2 \times 2 \times 2 [grouping the factors in triplets]$
$=2^3 \times 2^3=(2 \times 2)^3=4^3$
Therefore, $\sqrt[3]{{64}} = 4$
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