Mathematics, 20.06.2020 00:57 nicog94

wenty-one telephones have just been received at an authorized service center. Seven of these telephones are cellular, seven are cordless, and the other seven are corded phones. Suppose that these components are randomly allocated the numbers 1, 2, . . . , 21 to establish the order in which they will be serviced. (Round your answers to four decimal places.) (a) What is the probability that all the cordless phones are among the first fourteen to be serviced

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