Permutations When deciding who goes first and who goes second, order matters. An arrangement or...
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Transcript of Permutations When deciding who goes first and who goes second, order matters. An arrangement or...
Permutations
When deciding who goes first and who goes second, order matters. An arrangement or listing in which order is important is called a permutation.
An ice cream shop has 31 flavors. Carlos wants to buy a three-scoop cone with three different flavors. How many cones could he buy if the order of the flavors is important?
In a race with 7 runners, how many ways can the runners end up in first, second and third place?
The symbol P(31, 3) represents the number of permutations of 31 things taken 3 at a time.
P(31, 3) = 31 · 30 · 29
Find the value.
P (8, 3)
Find the value.
P (6, 6)
Out of ten songs on a CD, 3 different songs are randomly selected to play without repeating a song. What is the probability that the first three songs on the CD are selected?