Question

Write the probability that a number selected at random from the set of first 100 natural numbers is a cube.

Answer 1

$$\begin{gathered} \text{Number of cubes in first 100 natural numbers =}1,8,27,64 \\ \text{So, there are 4 cubes in first 100 natural numbers.} \\ P\left(\text{getting a cube from a set of first 100 natural numbers}\right)=\frac{4}{100} \\ =\frac{1}{25} \end{gathered}$$