AQuA-RAT train #26578 · Probability · Counting & chance
A box contains 12 red marbles
A box contains 12 red marbles. If someone were to remove 2 marbles from the bag, one at a time, and replace the first marble after it was removed, the probability that neither marble would be red is 25/36. How many marbles are in the bag?
AQuA-RAT — Algebra Question Answering with Rationales (Ling et al., DeepMind, 2017) · train #26578
Stuck? A gentle nudge
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