Mathematics, 06.06.2020 02:02, nika0001

in a survey of students 60% were in high school in 40% were in middle school of the high school students 30% had visited a foreign country if a survey of student is selected at random what is the probability that the student is in high school and has visited a foreign country?

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in a survey of students 60% were in high school in 40% were in middle school of the high school stud...