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Which smallest number must be added to 710 so that the...

This question belongs to Arithmetic Ability Square Root And Cube Root
Square Root and Cube Root
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Which smallest number must be added to 710 so that the sum is a perfect cube ?

Answer & Solution
Correct Answer: Option B
$$\eqalign{ & {\text{Required number to be added}} \cr & = {9^3} - 710 \cr & = 729 - 710 \cr & = 19 \cr} $$
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