A professor tells his class that he will give them a surprise examination sometime next week.

For our purposes, an examination is considered a "surprise" if on that day, the class is not 100% sure that they will get an examination. (If they only suspect it, the examination can still be a surprise.)

Having given the class this warning, is it still possible for the professor to give them a surprise examination next week? (Assume that he will not give them an exam if it will not be a surprise.)

if the class meets more than once a week, he could give them a quiz on the first class that week, they would not be sure if it was that class, or a class later that week

Posted by aaron on 2006-02-14 22:56:18