Problem:
A haunted house has six windows. In how many ways can Georgie the Ghost enter the house by one window and leave by a different window?
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Answer Choices:
A.
B.
C.
D.
E.
Solution:
Georgie has choices for the window in which to enter. After entering, Georgie has choices for the window from which to exit. So altogether there are different ways for Georgie to enter one window and exit another.
Answer: .
The problems on this page are the property of the MAA's American Mathematics Competitions