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Expected value of a roulette bet

  1. Feb 19, 2012 #1
    A has two bets(red or black) in a game of roulette. She bets half of what she has in the first round and then half of what she is left with after the first bet in the second bet. What is the expected value if she wins both bets?

    Is this correct? (n is what the player has originally)
    (n/2)*(18/37)*[(n/2+return)*(1/2)]*(18/37)
     
  2. jcsd
  3. Feb 19, 2012 #2

    mathman

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    Gold Member

    Your question is confusing. If she wins both bets the total value is fixed.
     
  4. Feb 19, 2012 #3
    Sorry I mistyped the question but I have figured the correct question myself already - thanks anyway!
     
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