Question

What is the smallest number by which 2400 may be multiplied so that the product
is a perfect cube?
i) 70
(ii) 80
(iii) 90
(iv) 60
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Answer 1

Answer:

2400= 2×2×2×2×2×3×5×5

the least number is 2×3×3×5 which must be multiplied so that the product is perfect cube

2×9×5=90

c option is correct

Answer 2

Answer:

90 Answer so that the product is a perfect cube