Lemma
MediumPermutations & combinations
AQuA-RAT train #13359 · Combinatorics · Permutations & combinations

a certain organization has three committees

a certain organization has three committees. only two persons are members of all committees, but every pair of committees have three members in common. what is the least possible no of member of members on any one committee?

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AQuA-RAT — Algebra Question Answering with Rationales (Ling et al., DeepMind, 2017) · train #13359

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