In the Gold Lotto, 7 numbers are selected from a pool of 45 different numbers. Each number can be selected only once. The order of the numbers is important. In how many ways can a combination of 7 numbers be drawn? If you want to have a 20% chance of winning, how many combinations of numbers are needed to be collected? Chock

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A: Given n=28 P=1-0.6=0.4

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A:

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A: Answer : The expected value = 2.250

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Q: Suppose 2 scholarships, $1000 each, is to be given to 2 students. There are 9 applicants. How many…

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