Question

what is the rational no. equivalent of cube root of 250/ 686=?
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Answer 1

$\sqrt[3]{ \frac{250}{686} } \\ \sqrt[3]{ \frac{125}{343} } \\ \sqrt[3]{ \frac{5 \times 5 \times 5}{7 \times 7 \times 7 } } \\ \frac{5}{7}$