Mathematics, 13.08.2019 03:30 iamhayls
On a particularly boring transatlantic flight, one of the authors amused himself by counting the heads of the people in the seats in front of him. he noticed that all 28 of them either had black hair or had a whole row to themselves (or both). of this total, 27 had black hair and 6 were fortunate enough to have a whole row of seats to themselves. how many of the black-haired people had whole rows to themselves?
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On a particularly boring transatlantic flight, one of the authors amused himself by counting the hea...
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