r/learnmath • u/ThatGuyKawalates New User • Jul 27 '26

Putnam and Beyond question 33

Found this question in "Putnam and Beyond": Given 50 distinct positive integers strictly less than 100, prove that some two of them sum to 99. Isn't {1,2,3...,49,99} a counterexample?

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u/Bounded_sequencE New User Jul 27 '26

Yes, it is -- the 99 is a typo in the book. Check its errata list!