Maths Olympiad Prep

Library / /427 of 475

, 2009

Combinatorics Difficulty 3.0 AMC 10/12 Find the answer Canada

The increasing list of five different integers {3,4,5,8,9}\{3, 4, 5, 8, 9\} has a sum of 29. How many increasing lists of five different single-digit positive integers have a sum of 33?

(A) 11 (B) 22 (C) 33 (D) 44 (E) 55

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Source: CEMC, University of Waterloo, licensed CC-BY-NC-4.0. Statement reproduced verbatim; metadata (topic, difficulty) added by this project. Solutions are the publisher's, linked not copied.