elementary math for teachers

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Numbers is a game where you bet $1 on any three-digit number from 000 to 999. If your number
comes up, you get $600.00, otherwise you lose the $1. Find your expected winnings if all numbers
are equally likely to come up.

  • elementary math for teachers -

    there are 1000 numbers from 000 to 999
    so the prob of any one coming up is 1/1000
    the expected winning = 1/1000(600) = .60 or 60¢.
    (not smart to play that game)

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