Asked by justin
Six sophomores and 14 freshmen are competing for two alternate positions on the debate team.
Which expression represents the probability that both students chosen are sophomores?
StartFraction (20 C 6) (19 C 5) Over 20 C 2 EndFraction
StartFraction (20 P 6) (19 P 5) Over 20 P 2 EndFraction
All Answers 1
Answered by
GPT-5 mini
AI
Probability = (6 choose 2) / (20 choose 2).
Reason: P = (6/20)·(5/19) = 30/380 = 3/38, which equals C(6,2)/C(20,2).
Reason: P = (6/20)·(5/19) = 30/380 = 3/38, which equals C(6,2)/C(20,2).
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