In Exercises 31–44 , specify the number of ways to perform the task described. Give your answers using P ( n, r ) or C ( n, r ) notation. The key in recognizing whether a problem involves permutations or combinations is deciding whether order is important. Choosing articles for a magazine. Redo Exercises 43 , except that in addition to choosing the stories, the editorial staff must also decide in what order the stories will appear. 43. Choosing articles for a magazine. The editorial staff of Oprah’s O Magazine is reviewing 17 articles. They wish to select eight for the next issue of the magazine.
In Exercises 31–44 , specify the number of ways to perform the task described. Give your answers using P ( n, r ) or C ( n, r ) notation. The key in recognizing whether a problem involves permutations or combinations is deciding whether order is important. Choosing articles for a magazine. Redo Exercises 43 , except that in addition to choosing the stories, the editorial staff must also decide in what order the stories will appear. 43. Choosing articles for a magazine. The editorial staff of Oprah’s O Magazine is reviewing 17 articles. They wish to select eight for the next issue of the magazine.
Solution Summary: The author explains the number of ways to select eight of 17 articles for the next issue of the magazines in order the stories will appear.
In Exercises 31–44, specify the number of ways to perform the task described. Give your answers using
P
(
n, r
)
or C
(
n, r
)
notation. The key in recognizing whether a problem involves permutations or combinations is deciding whether order is important.
Choosing articles for a magazine. Redo Exercises 43, except that in addition to choosing the stories, the editorial staff must also decide in what order the stories will appear.
43.Choosing articles for a magazine. The editorial staff of Oprah’s O Magazine is reviewing 17 articles. They wish to select eight for the next issue of the magazine.
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