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posted by Lisa Tuesday, May 18, 2010 at 11:16am.

The game of dots is played by rolling a fair die and receiving $1 for each dot showing on the top face of the die. What cost should be set for each roll if the game is to be considered a fair game?

Expected value = (1+2+3+4+5+6)/6 = 21/6 = 3.5 $3.50 is the break-even "fair" cost per roll.

Thanks, I did not know what the "fair die" meant.

A fair die is one that is not "loaded" or "shaved" to favor a particular side.

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