Midterm Exam I
Math 361
Name:
9/27/10
Read all of the following information before starting the exam:
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READ EACH OF THE PROBLEMS OF THE EXAM CAREFULLY!
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Show all work, clearly and in order, if you want to get full credit. I reserve the right to
take oﬀ points if I cannot see how you arrived at your answer (even if your ﬁnal answer is
correct).
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A single 8 1/2
×
11 sheet of notes (double sided) is allowed. Calculators are permitted.
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Circle or otherwise indicate your ﬁnal answers.
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Please keep your written answers clear, concise and to the point.
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This test has . problems and is worth 100 points. It is your responsibility to make sure
that you have all of the pages!
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Turn oﬀ cellphones, etc.
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READ EACH OF THE PROBLEMS OF THE EXAM CAREFULLY!
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Good luck!
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(
20 points
)
a. (
10 pts
)
10 people are in a room. Assuming their birthdays are
independent and uniformly distributed, what is the probability that at least two of them share
a birthday.
b. (
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 Fall '10
 Dr.PaulHorn
 Probability theory, pts

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