Posted by **Anonymous** on Wednesday, May 4, 2011 at 7:52am.

1) A secret admirer has been leaving you roses at the rate of 4/day. What is the probability that, on a given day, you will receive (a) exactly one rose (b) at least one rose?

2) Every student has a 1 in 9 chance of winning a certain prestigious scholarship. What is the probability that, in a group of 8 students, all of them win the scholarship? None of them wins it? At least one wins it?

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