Question

1. Which of the following numbers are not perfect cubes? Give reasons in support of
your answer:
(i) 648
(ii) 729
(iii) 8640
(iv) 8000


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Answer 1

Answer:

648 is the perfect cube

Answer 2

Answer:

648 and 8640 is not a perfect cube but 729 and 8000 is a perfect cube because 729 is a cube of 9 and 8000 is the cube of 20

hope you understand