Five thousand raffle tickets are sold. One first prize of $1000,two second prizes of $500 each,and three third prizes of $100 each will be awarded, with all winners selected randomly.
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with 1 ticket the expected winning is 1/5000 * $ 1000 + 2/5000 * $ 500 + 3/5000 * $ 100 = $0.20 + $ 0.20 + $ 0.06 = $ 0.46
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