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Three students, Chris, Vlad, and Steve, are registered for the same class and attend independently of each other. If Chris is in class 80% of the time, Vlad is in class 85% of the time, and Steve is in class 90% of the time, what is the probability that at least two of them are in class on a randomly selected day?Three cards are selected from a standard deck of 52 playing cards. If the first two cards are both spades, what is the probability that the third card is a spade?Three cards are selected from a standard deck of 52 playing cards. If the first two cards are both spades, what is the probability that the third card is a spade?Question 1:There can be 4 possibilities, Chris and Vlad or Vlad and Steve or Chris and Steve are inclass or all three in class.So required probability is= P(Chris and Vlad is…

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