Lemma
MediumCounting & chance
AQuA-RAT train #11443 · Probability · Counting & chance

When a random experiment is conducted, the probability that event A occurs…

When a random experiment is conducted, the probability that event A occurs is 1/4. If the random experiment is conducted 4 independent times, what is the probability that event A occurs exactly twice?

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 #11443

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