Question

A number is selected at random from 1 to 100.Find the propability that it is a perfect cube.
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Answer 1

Step-by-step explanation:

Total Numbers =1,2...100

=100

Perfect Squares

=1

2

,2

2

,3

2

...10

2

=1,4,9...100

=10 numbers

∴ Pralal =

100

10

=

10

1

Perfect Cube =1

3

,2

3

,3

3

...

=1,8,27,64

=4

∴ P (Not Perfect cube) =1−

100

4

=24/25