CombinatoricsDifficulty 3.0Find the answerCEMC Fermat · Canada · 1999
How many integers can be expressed as a sum of three distinct numbers if chosen from the set {4,7,10,13,...,46}? (A) 45 (B) 37 (C) 36 (D) 43 (E) 42
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Source: CEMC, University of Waterloo,
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