Question

A bag contains seven balls labeled 1 through 7. One ball will be randomly picked. What is the probability of picking an off number? Write your answer as a fraction in simplest form.

Answer 1

The odd numbers between 1 and 7 are 1, 3, 5, and 7. There are four of them.

The total number of balls in the bag is 7.

Therefore, the probability of picking an odd number is:

number of odd numbers / total number of balls = 4/7

So the probability of picking an odd number is 4/7