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January 24th, 2012, 11:04 PM  #1 
Member Joined: Jan 2012 Posts: 31 Thanks: 0  Roulette probability
Hi I'm just doing some problems and this question doesn't have an answer. Can someone check these over please? Suppose I bet on red at roulette and you bet on black, both bets on the same spin of the wheel: a) What is the probability that we both lose? b) What is the probability that at least one of us win? c) What is the probability that at least one of use lose? a) b) b) Cheers David. 
January 25th, 2012, 02:50 PM  #2  
Global Moderator Joined: May 2007 Posts: 6,444 Thanks: 565  Re: Roulette probability Quote:
a) Both lose only if it lands on 0 or 00. Odds are 2/38. b) If it lands on any of the 36 numbers one of you will win. Odds are 36/38. c) Since there is no slot which is both red and black, it is certain that at least one of you will lose.  
January 25th, 2012, 03:47 PM  #3 
Member Joined: Jan 2012 Posts: 31 Thanks: 0  Re: Roulette probability
Hahaha Yeah you're right. I don't know where my head was with that one. Thanks for your help. David. 

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