Answer
2730 cones
Work Step by Step
Order of the chosen flavors matters.
Permutations, ${}_{n}P_{r}=\displaystyle \frac{n!}{(n-r)!}$.
${}_{15}P_{3}=\displaystyle \frac{15!}{(15-3)!}=15\times 14\times 13$
$=2730$
Thinking Mathematically (6th Edition)
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0321867327
ISBN 13:
978-0-32186-732-2
Chapter 11 - Counting Methods and Probability Theory - 11.3 Combinations - Exercise Set 11.3 - Page 708: 49
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