Lemma
MediumPermutations & combinations
AQuA-RAT train #10925 · Combinatorics · Permutations & combinations

In how many ways can A, B, C, D and E be…

In how many ways can A, B, C, D and E be seated in a row such that A and C are not seated next to each other?

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AQuA-RAT — Algebra Question Answering with Rationales (Ling et al., DeepMind, 2017) · train #10925

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