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math

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A box contains 4 coins: a penny, a nickel, a dime, and a quarter. It costs a dime to reach in and take a coin. What is the expected value of this game?

  • math -

    (1/4)(1 + 5 + 10 + 25) cents
    That is 10.25 cents.

    If you bet a dime, it is still a good bet. You would have a 2.5% edge over the "house"

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