How many positive numbers from 1 to 200 both inclusive are equal to the cube of an integer?
A
6
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B
5
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C
4
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Solution
The correct option is B 5 Here, n3 varies from 1 to 200 (both 1 & 200 included) =1≤n3200=3√1≤n≤3√200=1≤n≤5.848 So, no. of positive integers equal to cube of an integer = 5 (1, 2, 3, 4, 5)