Lemma
MediumCounting & chance
AQuA-RAT train #13100 · Probability · Counting & chance

In a group of 800 people, 1/5 play at least one instrument…

In a group of 800 people, 1/5 play at least one instrument, 128 play two or more. What is the probability that one student play exactly one instrument?

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AQuA-RAT — Algebra Question Answering with Rationales (Ling et al., DeepMind, 2017) · train #13100

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