Lemma
MediumCounting & chance
AQuA-RAT train #34325 · Probability · Counting & chance

Diana is going on a school trip along with her two brothers…

Diana is going on a school trip along with her two brothers, Bruce and Clerk. The students are to be randomly assigned into 3 groups, with each group leaving at a different time. What is the probability that DIana leaves at the same time as AT LEAST on her bothers?

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AQuA-RAT — Algebra Question Answering with Rationales (Ling et al., DeepMind, 2017) · train #34325

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