AQuA-RAT train #90468 · Probability · Counting & chance

10 different letters of English alphabet are given

10 different letters of English alphabet are given. A word is formed using 5 letters ( with replacement ) out of these. Find the probability that at least one letter is repeated in the word.

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AQuA-RAT — Algebra Question Answering with Rationales (Ling et al., DeepMind, 2017) · train #90468

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