Lemma
MediumPermutations & combinations
AQuA-RAT test #91 · Combinatorics · Permutations & combinations

In how many ways can a teacher in a kindergarten school arrange…

In how many ways can a teacher in a kindergarten school arrange a group of 3 children (Susan, Tim and Zen) on 3 identical chairs in a straight line so that Susan is on the left of Tim?

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AQuA-RAT — Algebra Question Answering with Rationales (Ling et al., DeepMind, 2017) · test #91

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