Q.

Among the following, the smallest number by which the number 2401 must be divided to obtain a perfect cube is

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a

7

b

6

c

9

d

5

answer is A.

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Detailed Solution

2401=7×7×7×7

the smallest number by which the number 2401 must be divided is 7

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Among the following, the smallest number by which the number 2401 must be divided to obtain a perfect cube is