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Question
Find which of the following number is cube of rational number 0.04 .
Sum
Solution
We have: \[0 . 04 = \frac{4}{100} = \frac{2 \times 2}{2 \times 2 \times 5 \times 5}\]
It is evident that 4 and 100 could not be grouped in to triples of equal factors; therefore, 0.04 is not a cube of a rational number.
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