Five juniors and four seniors have applied for two open student council positions. School
Administrators have decided to pick the two new members randomly. What is the probability they
Are both juniors or both seniors?
A) 0.444
B) 0.395
C) 0.569
D) 0.506
E) 0.722

Question

Quizplus · Accepted Answer

The probability of picking two juniors is (5/9) * (4/8) = 20/72. The probability of picking two seniors is (4/9) * (3/8) = 12/72. Adding these probabilities gives (20/72) + (12/72) = 32/72 = 0.444.

Five Juniors and Four Seniors Have Applied for Two Open