It was a dark and stormy night. Some scouts were sitting around a campfire. Their leader rose, and said, “It was a dark and stormy night. Some scouts were sitting around a campfire. Their leader rose, and said, ‘It was a dark and stormy night. Some scouts were sitting around a campfire. Their leader rose, and said, “It is time for another wonderful installment of Doctor E’s Revenge. The contest is open to any UNI or high-school student, and there is a cash prize of $60 for the winner, with prizes of $40 and $20 going to the runners up. All outstanding scores get handsome certificates, suitable for framing.” ’ ”

Turning in the correct solution to this week’s puzzle by 2/25 will earn 2 puzzle-points. Turning in the correct solution along with Paul McCartney’s middle name earns 3 puzzle-points.

Mrs. Hubbard has some children. Every day, she picks two of them at random, and drops them off at your house for you to baby sit. After some years, you notice that half of the time, both of the children have blue eyes. If the probability is 50% that a random pair of her children both have blue eyes, then what is the fewest number of children she can have, and what color eyes would they have?

The deadline for sending in solutions has expired.  But feel free to take some time to work on this one, and click here to see the answer.   Alternatively, click here to see the current challenge.

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