Lemma
MediumPermutations & combinations
AQuA-RAT train #73589 · Combinatorics · Permutations & combinations

Holly,Paul,Anne and Jim are rehearsing a dance routine

Holly,Paul,Anne and Jim are rehearsing a dance routine. How many different ways can you arrange the 4 dancers in a line if Anne must be first or second

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AQuA-RAT — Algebra Question Answering with Rationales (Ling et al., DeepMind, 2017) · train #73589

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