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The Australian Official Lottery has scratchoff instant lottery tickets that can be purchased for $1. The probability of winning a prize is 1 in 4.

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The Australian Official Lottery has scratchoff instant lottery tickets that can be purchased for $1. The probability of winning a prize is 1 in 4. a. Mr. Urban is feeling lucky one day and decides to purchase 100 of the scratch off instant lottery tickets. Find the probability that fewer than 20 tickets are winners

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