find the smallest number by which each of the following numbers must be divided to obtain a perfect cube -a)7875
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It's clear from attachment that
7875 = 3 × 3 × 5 × 5 × 5 × 7
Here, 3 and 7 doesn't forms a pair
So,
7 × 3 × 3 = 63
7875 must be divided from 63 to obtain perfect cube
7875 / 63 = 125
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Answer:
125
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