Taking Classes

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Given certain parameters, how many possible students can take math and English, science and English, and math and science?

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Too Many Dogs

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Determine how many dogs Elizabeth owns.

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Getting Free

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How should a prisoner arrange 200 balls so that the prisoner has the greatest possibility of going free?

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Matching Socks

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Determine the number of socks you should pull out in order to guarantee that you will have a pair.

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Mystery Envelopes

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Knowing what’s in one envelope, should you keep your envelope or switch and ask for the other one?

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Getting on Base

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How many hits would you expect your favorite baseball player to have in the next 15 at-bats?

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Hitting the Bulls-eye

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How many times would you expect to throw the dart until you hit the bulls-eye?

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Bonus Free Throws

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Given Rachel’s free throw percentage, will she send the game into overtime?

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Unusual Occurence

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Can a fair coin that is tossed ten times land on heads all ten times?

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Ground Zero

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Consider events with probabilities equal to 0.

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