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2 Questions: Odds and Probability

  1. Nov 6, 2005 #1
    Hey all,

    I was going over some questions in my textbook when I came across these two questions. I could not get the answer in the back of the book (possibly because there is an error) or I did something wrong. I'd appreciate it if anybody can help me out.

    1) If the odds in favor of team A winning the championship is 1:5, and the odds in favor of team B winning the championship is 2:13, what are the odds in favor of either team A or team B winning the championship.

    2) What is the probability that exactly two out of eight friends will have the same birthday?


    I'd appreciate any input

    Thanks
     
  2. jcsd
  3. Nov 6, 2005 #2
    you have to show some work, what have you tried?
     
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