At St. Xavier High School ten candidates C1, C2, ..., C10, run for senior class president. (a)
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(a) How many outcomes are possible where (i) there are no ties (that is, no two, or more, candidates receive the same number of votes? (ii) ties are permitted? [Here we may have an outcome such as {C2, C3, C7}, {C1, C4, C9, C10}, {C5}, {C6, C8}, where C2, C3, C7 tie for first place, C1, C4, C9, C10 tie for fourth place, C5 is in eighth place, and C6, C8 are tied for ninth place.] (iii) three candidates tie for first place (and other ties are permitted)?
(b) How many of the outcomes in section (iii) of part (a) have C3 as one of the first-place candidates?
(c) How many outcomes have C3 in first place (alone, or tied with others)?
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Discrete and Combinatorial Mathematics An Applied Introduction
ISBN: 978-0201726343
5th edition
Authors: Ralph P. Grimaldi
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