Question

A lottery game has balls numbered 3 through 17. If a ball is selected at random, what is the probability of obtaining an odd numbered ball or the number 11 ball?

Answer 1

8/15

Explanation:

The balls are numbered 3 through 17, so there are 17 − 3 + 1 = 15 balls. 8 of them are odd and 7 of them are even.

So the probability of an odd numbered ball (which includes the number 11 ball) is 8/15.