Mathematics, 13.05.2021 21:40 andreanb9632

PLEASE HELP (i dont know whats going on...) {75 points} Suppose you have n items from which you choose r at a time. Explain why you must divide the number of permutations n!/(n−r)! fraction n factorial , over open n minus r close factorial end fraction by r! to find the number of combinations n!/r!(n−r)!

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PLEASE HELP (i dont know whats going on...) {75 points} Suppose you have n items from which you cho...