Lemma
MediumCounting & chance
AQuA-RAT train #10948 · Probability · Counting & chance

Two distinct numbers a and b are chosen randomly from the set…

Two distinct numbers a and b are chosen randomly from the set of first 20 positive integers. What is the probability that |a–b| would not be divisible by 3?

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AQuA-RAT — Algebra Question Answering with Rationales (Ling et al., DeepMind, 2017) · train #10948

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