Lemma
MediumPermutations & combinations
AQuA-RAT train #93808 · Combinatorics · Permutations & combinations

In how many ways can 3 postcards can be posted in 5…

In how many ways can 3 postcards can be posted in 5 postcards?

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AQuA-RAT — Algebra Question Answering with Rationales (Ling et al., DeepMind, 2017) · train #93808

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