Lemma
MediumPermutations & combinations
AQuA-RAT train #52408 · Combinatorics · Permutations & combinations

An organisation has 3 committees, only 2 persons are members of all…

An organisation has 3 committees, only 2 persons are members of all 3 committee but every pair of committee has 3 members in common. what is the least possible number of members on any one committee?

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AQuA-RAT — Algebra Question Answering with Rationales (Ling et al., DeepMind, 2017) · train #52408

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