Question

128 is a perfect cube or not ??​

Answer 1

$\huge\pink{\mathfrak{answer}}$

Grouping the prime factors of 128 into triples, we are left over with 2 as ungrouped factor. ∴ 128 is not a perfect cube. Grouping the prime factors of 1000 into triples, we are not left over with any factor. ∴ 1000 is a perfect cube.

Answer 2

⚡⚡ Answer ⚡⚡

Grouping the prime factors of 128 into triples, we are left over with 2 as ungrouped factor. ∴ 128 is not a perfect cube. Grouping the prime factors of 1000 into triples, we are not left over with any factor. ∴ 1000 is a perfect cube.