Posted by BreAnna on Friday, May 13, 2011 at 5:20pm.
A lottery is set up in which players pick six numbers from the set 1, 2, 3, ... , 39, 40. How many different ways are there to play this lottery? (In this game the order in which the numbers are picked does NOT matter.)

math help pls!  MathMate, Friday, May 13, 2011 at 7:12pm
the number of ways to choose 6 numbers (independent of order) out of 40 is
"40 choose 6"
=C(40,6)
=40!/((406)!6!)
=40!/(34!6!)