Problem 3
There are 10 open windows in a house. In how many different orders can all of the windows
be closed and locked, provided that each window must be closed prior to becoming locked?
Don't forget to show your
WORK with your solution!
Students, email your solutions to
UNOhighschoolpow@mail.unomaha.edu.
Solutions are due by 11:59PM on Friday Septmeber 30th, 2011.
Along with your solution, include your name, your school's name,
the name of your math teacher or math club moderator, and your year in school.
