Answer
$C(18,1) = 18$
Work Step by Step
Use the formula $C(n, r)=\dfrac{n!}{(n-r)!r!}$:
$C(18,1)
\\= \dfrac{18!}{(18-1)!\times1!}
\\= \dfrac{18!}{17!}
\\=\dfrac{18\times17!}{17!}
\\= 18$.
Precalculus: Concepts Through Functions, A Unit Circle Approach to Trigonometry (3rd Edition)
by Sullivan III, Michael
Published by
Pearson
ISBN 10:
0-32193-104-1
ISBN 13:
978-0-32193-104-7
Chapter 12 - Counting and Probability - Section 12.2 Permutations and Combinations - 12.2 Assess Your Understanding - Page 875: 20
Update this answer!
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.
