Lemma
MediumPermutations & combinations
AQuA-RAT train #86105 · Combinatorics · Permutations & combinations

In how many ways can two members be selected from a group…

In how many ways can two members be selected from a group of ten members?

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AQuA-RAT — Algebra Question Answering with Rationales (Ling et al., DeepMind, 2017) · train #86105

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