Arranging Students In how many ways can 15 students be lined up?
Answer to relevant QuestionsA salesperson must travel to eight cities to promote a new marketing campaign. How many different trips are possible if any route between cities is possible? A Social Security number is used to identify each resident of the United States uniquely. The number is of the form xxx–xx–xxxx, where each x is a digit from 0 to 9. (a) How many Social Security numbers can be ...Four members from a 50-person committee are to be selected randomly to serve as chairperson, vice-chairperson, secretary, and treasurer. The ﬁrst person selected is the chairperson; the second, the vice-chairperson; the ...In Mega Millions, an urn contains balls numbered 1 to 56, and a second urn contains balls numbered 1 to 46. From the ﬁrst urn, 5 balls are chosen randomly, without replacement and without regard to order. From the second ...Suppose that you have just received a shipment of 20 modems. Although you don’t know this, 3 of the modems are defective. To determine whether you will accept the shipment, you randomly select 4 modems and test them. If ...
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