Question

In a certain Algebra 2 class of 24 students, 9 of them play basketball and 13 of them play baseball. There are 7 students who play both sports. What is the probability that a student chosen randomly from the class plays basketball or baseball?

Answer 1

Use the inclusion–exclusion principle: number who play either = 9 + 13 − 7 = 15. So the probability = 15/24 = 5/8 ≈ 0.625.