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Chapter 11: Problem 28
Evaluate each factorial expression. \(\left(\frac{45}{9}\right) !\)
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The local seven-digit telephone numbers in Inverness, California, have 669 as the first three digits. How many different telephone numhers are possihle in Inverness?
Explain the Fundamental Counting Principle.
As in Exercise 1, six performers are to present their comedy acts on a weekend evening at a comedy club. One of the performers insists on being the last stand-up comic of the evening. If this performer's request is granted, how many different ways are there to schedule the appearances?
Are related to the SAT, described in Check Point 4 on page \(752 .\) An oil company is considering two sites on which to drill, described as follows: Site A: Profit if oil is found: \(\$ 80\) million Loss if no oil is found: \(\$ 10\) million Probability of finding oil: \(0.2\) Site B: Profit if oil is found: \(\$ 120\) million Loss if no oil is found: \(\$ 18\) million Probability of finding oil: \(0.1\) Which site has the larger expected profit? By how much?
You are taking a multiple-choice test that has five questions. Each of the questions has three answer choices, with one correct answer per question. If you select one of these three choices for each question and leave nothing blank, in how many ways can you answer the questions?
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