Practice Midterm

Include the empty set d you have twenty people in a

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Unformatted text preview: . c. How many different subsets are there in a 7element sample space? (include the empty set) d. You have twenty people in a rowing contest. How many ways can there be three winners where there is a first, second and third place winner? e. Consider (x+y)7. What is the coefficient of x5y2. f. How many outcomes of 7 flips of a coin have 5 heads? 2. a. Show that the sets AcBC and ABC are disjoint where Ac is ~A. b. Show that AcB U AB U ABc U AcBc is...
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