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Four buses carrying 164 high school students arrive to Montreal. The buses carry, respectively, 39, 45, 32, and 48 students. One of the studetns is randomly selected. Let X denote the number of students that were on the bus carrying this randomly selected student. One of the 4 bus drivers is also randomly selected. Let Y denote the number of students on his bus. Compute the expectations of X and Y?

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