If among (n) objects (k) are alike and the others are all distinct, the number of permutations
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If among \(n\) objects \(k\) are alike and the others are all distinct, the number of permutations of these \(n\) objects taken all together is \(n ! / k !\).
(a) How many permutations are there of the letters of the word class?
(b) In how many ways can the television director of Exercise 3.21 fill the 6 time slots allocated to commercials, if there are 4 different commercials, of which a given one is to be shown 3 times while each of the others is to be shown once?
Data From Exercise 3.21
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Related Book For
Probability And Statistics For Engineers
ISBN: 9780134435688
9th Global Edition
Authors: Richard Johnson, Irwin Miller, John Freund
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