Lemma
MediumCounting & chance
AQuA-RAT train #1352 · Probability · Counting & chance

Griffin has a bag of marbles that contains 7 black marbles and…

Griffin has a bag of marbles that contains 7 black marbles and 5 red marbles. If he removes 3 marbles at random without replacing any of the marbles, what is the probability that all 3 marbles selected will be black?

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AQuA-RAT — Algebra Question Answering with Rationales (Ling et al., DeepMind, 2017) · train #1352

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