Question

A number is chosen at random from the first 100 positive integers. Find the probability that the number is either even or

a perfect square

3/5
11/20
1/20

Answer 1

`(11)/(20)`

Explanation:

Total no. of possible outcome= 100 (from 1 to 100)

total no. of favorable outcome= 60 (50 even and 5 odd perfect square)

Hence PROBABILITY=
`\\(55)/(100)`

=
`(11)/(20)`