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SolutionHW1-SP11

# SolutionHW1-SP11 - Solution Homework Assignment 1 SP 2011...

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Solution SP 2011 Homework Assignment # 1 Dr. Goel

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Note that the above event can also be expressed as 1 2 3 2 1 3 3 1 2 [ { } ] [ { } ] [ { } ] A A A A A A A A A 1 2 3 { } A A A

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Remark for d: you may calculate P(at most two errors)=P(no error)+P(1 error)+P(2 errors), but the calculation of each term may be lengthy. Considering the complement of the event is a useful skill in solving many problems, which you will see below. 34 b, We first select 4 out of 8 with crack, and then another one out of 17 without crack. Then use the product rule. So the number of ways equals
38, c. 4 5 6 1 2 0

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