Postby jg.allinsymbols » Fri Jan 04, 2013 5:59 am
A good set of lessons for combinations and permutations on purplemath site would be great. One of my old Intermediate Algebra books has a couple of sections on these and although good, is not very deep. An old College Algebra book or two here also has some sections on combinations and permutations, but the material is too confusing. So a good set of lessons to add to purplemath would be for permutations, combinations, and probability.