Lemma
MediumPermutations & combinations
AQuA-RAT train #57951 · Combinatorics · Permutations & combinations

25 bikes are running between two places A & B

25 bikes are running between two places A & B. In how many ways can a person go from A to B and return by a different bikes?

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AQuA-RAT — Algebra Question Answering with Rationales (Ling et al., DeepMind, 2017) · train #57951

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