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Mathematics, 04.07.2020 22:01 victory08
As of a certain date, roughly 50 million web domain names were registered. a) How many domain names consisting of just two letters in sequence can be formed? (lower case only) b)How many domain names are there consisting of three letters in sequence? (lower case only) c) How many domain names are there consisting of four letters in sequence if either letters or digits are permitted? (lower case only) d) As of this certain date, 97,786 of the four -character sequences using either letters or digits had not yet been claimed. If a four-character name is randomly selected, what is the probability that it is already owned? (use your answer in c above)
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Mathematics, 21.06.2019 17:20
Four airplanes carrying a total of 400 passengersarrive at the detroit airport. the airplanes carry, respectively,50, 80, 110, and 160 passengers.a) one of the 400 passengers is selected uniformly at random.let x denote the number of passengers that were on theairplane carrying the randomly selected passenger. find var(x)for x as given in the problemb) one of the 4 airplane drivers is also selected uniformly atrandom. let y denote the number of passengers on the chosen driver’s airplane. find var(y) for y as given in the problem
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Mathematics, 21.06.2019 20:00
Describe a situation that you could represent with the inequality x< 17
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As of a certain date, roughly 50 million web domain names were registered. a) How many domain names...
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