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May 30th, 2017, 02:09 AM   #1
Joined: Jun 2015
From: House

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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.
dudeperfect is offline  
May 30th, 2017, 11:37 AM   #2
Joined: Jan 2017
From: California

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$Expected\ winnings = \frac{1}{50}\times 100+\frac{3}{50}\times 30+\frac{6}{50}\times 10 = 5\ cents\\ 10\ cents> 5 \ cents$

Therefore, the game should not be played
dthiaw is offline  

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