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May 30th, 2017, 01:09 AM  #1 
Newbie Joined: Jun 2015 From: House Posts: 11 Thanks: 0  Roulette probability
Hello, I have a fortune wheel, which is divided to 50slots. People pay 10cents and can win prizes. One slot is 100 cents worth, 3 slots are worth 30 cents and 6 slots are worth 10 cents. All other 40 slots are worth nothing. My question is, would this roulette be profit for me or for a player? Cause I am not sure how to calculate them correctly in this case. Thank you. 
May 30th, 2017, 10:37 AM  #2 
Member Joined: Jan 2017 From: California Posts: 65 Thanks: 5 
$Expected\ winnings = \frac{1}{50}\times 100+\frac{3}{50}\times 30+\frac{6}{50}\times 10 = 5\ cents\\ 10\ cents> 5 \ cents$ Therefore, the game should not be played 

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