Posted by lizzie on Thursday, April 22, 2010 at 10:45am.
people are entering a room with five doors and come out, how many ways are there if they canâ€™t go out from the door they went in.

math  jane, Thursday, April 22, 2010 at 11:07am
how do you find the area of a square

math lizzie  PsyDAG, Thursday, April 22, 2010 at 11:26am
If a person comes in one of the five doors and can only leave from another door, that means there are four ways that person can leave.

math jane  PsyDAG, Thursday, April 22, 2010 at 11:28am
First, if you have a question, it is much better to put it in as a separate post in <Post a New Question> rather than attaching it to a previous question, where it is more likely to be overlooked.
Multiply the height times width. With a square, the sides are equal, so area = s^2 (side squared).
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