There are 3 children, A, B, and C. The teacher says they will get one chance to get an A for the semester without having to do any more homework. All they have to do is to answer one of his math problems right.
The problem is that he has 5 hats, 3 red and 2 blue. The children are told to stand in line with their eyes blindfolded. The teacher puts one hat on each of their heads and then discards the remaining 2 hats so they cannot be seen. Then the first child is told he can look at the other two children and, judging by the color of their hats, he can guess the color of the hat he wears. He can either guess or pass. (The children will only guess if they are 100% positive they are correct.)
The guess and pass process is carried through with the rest of the children. Student A passes, Student B passes, and then without even opening his eyes Student C guesses correctly what hat is on his head. Explain how he knows without even looking.
2007-08-25
22:52:26
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4 answers
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huh
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