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

The answer is B. 11/20

Answer 2

Option A is correct.

Explanation:

Total Number of Outcome = 100

Number of even numbers = 50

Number of perfect square = 10

`Probability=(Number\:of\:favorable\:outcome)/(Number\:of\:total\:outcome)`

`Probability=(50)/(100)+(10)/(100)=(60)/(100)=(3)/(5)`

Therefore, Option A is correct.