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Topic: Hard probability questions
Replies: 7   Last Post: May 17, 2006 9:55 PM

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ERIC LAW

Posts: 7
Registered: 12/10/04
Hard probability questions
Posted: May 17, 2006 2:02 AM
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There are two questions in a test. The probability that David answers the
first question correctly is 1/4 and the probability that David answers the
second question correctly is 1/3. Given that David answers at least one
question correctly in the test, find the probability that he answers the
second question correctly.





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