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1) In an experiment of rolling two fair dice simultaneously, what is the probability that both show 5? 2) At a small college, 10% of the students are mathematics majors

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1) In an experiment of rolling two fair dice simultaneously, what is the probability that both show 5?

2) At a small college, 10% of the students are mathematics majors. Answer the following questions:   (a)If a student is selected at random from this college, what is the probability that the student is not a mathematics major?      (b)If three students are randomly selected, what is the probability that all three are not mathematics majors?