# 01_31 - STAT 400 Examples for 01/31/2011 Spring 2011...

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STAT 400 Examples for 01/31/2011 Spring 2011 Multiplication Principle ( Fundamental Rule of Counting ): If there are n events and event i can occur in N i possible ways, then the number of ways in which the sequence of n events may occur is N 1 N 2 ... N n 1. The call letters of radio and television stations in the United States begin with either K or W. Those west of the Mississippi River start with K and those east of it with W. a) Some stations, such as KID in Idaho Falls, Idaho, and WOW in Omaha, Nebraska, have 3 call letters. How many sets of call letters having 3 letters are possible? b) Most stations that were licensed after 1927 have 4 call letters, such as KUZZ in Bakersfield, California, and WXYZ in Detroit, Michigan. How many sets of call letters having 4 letters are possible? c) How many sets of call letters having 4 letters are possible if we are not allowed to repeat letters?

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2. In how many orders can the names of 5 candidates for the same office be listed on a ballot? n
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## This note was uploaded on 02/24/2011 for the course STAT 400 taught by Professor Kim during the Spring '08 term at University of Illinois, Urbana Champaign.

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01_31 - STAT 400 Examples for 01/31/2011 Spring 2011...

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