1. The call letters of radio stations in the United States consist of either three or four...

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1. The call letters of radio stations in the United States consist of either three or four letters, where the first letter is K or W. How many different call letters are possible?
2. A group of students can be arranged in a row of seats in 479,001,600 ways. How many students are there?
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Finite Mathematics and Its Applications

ISBN: 978-0134768632

12th edition

Authors: Larry J. Goldstein, David I. Schneider, Martha J. Siegel, Steven Hair

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