Lemma
MediumPermutations & combinations
AQuA-RAT train #2598 · Combinatorics · Permutations & combinations

Susan, Tim,and Kim need to be seated in 3 identical chairs in…

Susan, Tim,and Kim need to be seated in 3 identical chairs in straight line so that Susan is seated always left to Tim. How many such arrangements are possible ?

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AQuA-RAT — Algebra Question Answering with Rationales (Ling et al., DeepMind, 2017) · train #2598

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