Lemma
MediumCounting & chance
AQuA-RAT train #62397 · Probability · Counting & chance

A bag contains 3 red, 5 yellow and 7 green balls

A bag contains 3 red, 5 yellow and 7 green balls. 3 balls are drawn randomly. What is the probability that the balls drawn contain balls of different colours?

This problem repeats another one in the library (at most with different numbers), so it's left out of browsing.

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AQuA-RAT — Algebra Question Answering with Rationales (Ling et al., DeepMind, 2017) · train #62397

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