If a student is selected at random from those with a passing grade ....

Jan 2008
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If a student is selected at random from those with a passing grade, what is the Probability that the student will receive a B or higher?

A 6/25 B 6/22 C 9/25 D 9/22 E 8/25
 
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e^(i*pi)

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Feb 2009
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If a student is selected at random from those with a passing grade, what is the Probability that the student will receive a B or higher?

A 6/25 B 6/22 C 9/25 D 9/22 E 8/25
How many students passed? What's a passing grade? Are all grades equally distributed (ie: did the same number of people get an A as those who got a B)?
 
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