Lemma
MediumPermutations & combinations
AQuA-RAT train #60643 · Combinatorics · Permutations & combinations

In how many E ways can 4 white and 3 black chess…

In how many E ways can 4 white and 3 black chess pieces be arranged in a row such that they occupy alternate places? Assume that the pieces are distinct.

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AQuA-RAT — Algebra Question Answering with Rationales (Ling et al., DeepMind, 2017) · train #60643

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