Which of the following numbers is a perfect square as well as a perfect cube?

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Solution

The correct option is B
64

36 = $6 \times 6$

64 = $4 \times 4 \times 4$

25 = $5 \times 5$

49 = $7 \times 7$

Factors of only 64 are forming the triplet.

Hence 64 is the perfect cube

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How many numbers are there from 1 to 1000 which are perfect squares as well as perfect cubes?

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