Maths Olympiad Prep

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Problem 644

AMC 10/12, early questions
Combinatorics Difficulty 3.0 Find the answer CEMC 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}\{4, 7, 10, 13, ..., 46\}? (A) 4545 (B) 3737 (C) 3636 (D) 4343 (E) 4242

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