Answer
Always
Work Step by Step
$nC1 = n$
$n!/(n-1)!1! = n$
$n * (n-1)!/(n-1)! = n$
$n = n $
Algebra 1
by Hall, Prentice
Published by
Prentice Hall
ISBN 10:
0133500403
ISBN 13:
978-0-13350-040-0
Chapter 12 - Data Analysis and Probability - 12-6 Permutations and Combinations - Practice and Problem-Solving Exercises - Page 756: 62
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