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Question
Which of the following numbers is not a perfect cube?
Options
216
567
125
343
MCQ
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Solution
567
Explanation:
567 = 3 × 3 × 3 × 3 × 7
Clearly, 567 is not a perfect cube, because in grouping, the factors in triplets of equal factors, we are left with two factors 3 × 7.
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