Tops Time Cards , Weekly, 1-Sided, Numbered Days, 3-1/2" x 9", Manila, Green Print, 100-Count (12523)

we're going to look at a couple more examples with counting with combinations combinations are ubiquitous they help us count a lot of different things and on the outside when we're dealing with combinations we like to use this notation and choose our equivalently combination of n comma r and you may even see it listed like this in certain calculators i encourage you to do a quick google search on your specific device and counting these because we don't really ever use the formulas specifically because this is uh n factorial over n minus r factorial times r factorial a lot of times when n is really big the calculator simply will overflow you'll get an overflow error so there are buttons in the calculator to do this computation it's not important that you do do it by hand with the formula and we also know that the permutations of n things taken r at a time is almost the same thing but we