Probability
posted by Mujtaba .
Suppose that a fair die is tossed. What is the expected number of spots on the
uppermost face of the die when it comes to rest? Will this number of spots
ever be seen when the die is tossed?

Expectation value =
(1/6)*(1+2+3+4+5+6) = 3.5
That number will never be thrown, of course.
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