Rooms in a completely random fashion

Reference no: EM13965479

Four graduating seniors, A, B, C, and D, have been scheduled for job interviews at 10 a.m. on Friday, January 13, at Random Sampling, Inc. The person- nel manager has scheduled the four for interview rooms 1, 2, 3, and 4, respectively. Unaware of this, the manager s secretary assigns them to the four rooms in a completely random fashion (what else!). What is the probability that

a. All four end up in the correct rooms?

b. None of the four ends up in the correct room?

Reference no: EM13965479

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