Lemma
MediumCounting & chance
AQuA-RAT train #4995 · Probability · Counting & chance

A bag contains 50black pens and 60 white pens

A bag contains 50black pens and 60 white pens. One ball is drawn at random. What is the probability that the ball drawn is black?

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AQuA-RAT — Algebra Question Answering with Rationales (Ling et al., DeepMind, 2017) · train #4995

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