Posted by joe on Thursday, June 17, 2010 at 9:13pm.
assignment for an art class is to complete 4 projects from a list of 6. how many ways can this be done if the order soes not matter?

math  Reiny, Thursday, June 17, 2010 at 10:42pm
you are "choosing" 4 form 6
C(6,4) = 6!/(4!2!) = 15