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-An after-school club consists of 10 juniors and 12 seniors. If 2 students are chosen at random to
represent the club at a school fair, what is the probability that both students selected are seniors
given that both are from the same class level?
-A student attends biology class with probability 0.80. She attends geometry class with
probability 0.90. If attending those classes are independent, find the probability that she attends
at least one of those classes. [Hint: Use a Venn Diagram]

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