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Monday, July 28, 2008

At School

The gentlemen Dutch, English, Painter, and Writer are all teachers at the same secondary school. Each teacher teaches two different subjects. Furthermore:

* Three teachers teach Dutch language
* There is only one math teacher
* There are two teachers for chemistry
* Two teachers, Simon and mister English, teach history
* Peter doesn't teach Dutch language
* Steven is chemistry teacher
* Mister Dutch doesn't teach any course that is tought by Karl or mister Painter.

The Question: What is the full name of each teacher and which two subjects does each one teach?

Answer: Since Peter as only one doesn't teach Dutch language, and mister Dutch doesn't teach any course that is tought by Karl or mister Painter, it follows that Peter and mister Dutch are the same person and that he is at least math teacher. Simon and mister English both teach history, and are also among the three Dutch teachers. Peter Dutch therefore has to teach next to math, also chemistry. Because Steven is also chemistry teacher, he cannot be mister English or mister Painter, so he must be mister Writer. Since Karl and mister Painter are two different persons, just like Simon and mister English, the names of the other two teachers are Karl English and Simon Painter.

Peter Dutch, math and chemistry
Steven Writer, Dutch and chemistry
Simon Painter, Dutch and history
Karl English, Dutch and history.

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