Lemma
MediumCounting & chance
AQuA-RAT train #28227 · Probability · Counting & chance

There are 20 balls in a box: 11 balls are green, 6…

There are 20 balls in a box: 11 balls are green, 6 are blue and 3 are white. Then 1 green and 1 blue balls are taken from the box and put away. What is the probability that a green ball is selected at random from the box?

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AQuA-RAT — Algebra Question Answering with Rationales (Ling et al., DeepMind, 2017) · train #28227

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