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hey guys, i've picked up a few formulas from the prac. tests i've been taking, but i'm confused when to apply these.
i know for people sitting around a circle the law is (n-1)!
the other two laws i have picked up are when you are grouping things:
n!/(n-r)! and n!/r!(n-r!)...............what is the difference btwn these
last two laws? any help would be appreciated.
i know for people sitting around a circle the law is (n-1)!
the other two laws i have picked up are when you are grouping things:
n!/(n-r)! and n!/r!(n-r!)...............what is the difference btwn these
last two laws? any help would be appreciated.
