1.

Which of the following numbers are not perfect cubes?(1) 216(ii) 128(iii) 1000​

Answer»

ANSWER:

Grouping the prime factors of 216 into triples, no FACTOR is left over. ∴ 216 is a perfect CUBE. ∴ 128 is not a perfect cube. ∴ 1000 is a perfect cube.

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