Question

From the data 1, 4, 7, 9, 16, 21, 25, if all the even numbers are removed, then the probability of getting at random a prime number from the remaining is ______.

Options

• `2/5`

• `1/5`

• `1/7`

• `2/7`

Answer 1

From the data 1, 4, 7, 9, 16, 21, 25, if all the even numbers are removed, then the probability of getting at random a prime number from the remaining is `underline(1/5)`.

Explanation:

Given:

1, 4, 7, 9, 16, 21, 25 After removing even numbers, the data is 1, 7, 9, 21, 25

Prime number: 7

Thus, required probability = `1/5`