Factorials
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! No, I'm not shocked. !, or factorials, have to do with math. This symbol is very useful in probability. Suppose I gave you 3 different tokens. One has an "R" on it, one has a "B" on it, and the last one has a "G" on it. How many unique combinations can you make with these tokens? RBG RGB BRG BGR GRB GBR I just made 6 unique combinations. That means that 3! is equal to 6. Now, suppose I gave you 4 different tokens. One has an "R" on it, one has a "B" on it, one has a "G" on it, and one has "V" on it. How many unique combinations can you make with these tokens? RBGV RBVG RGVB RGBV RVBG RVGB BRGV BRVG BGRV BGVR BVRG BVGR GBRV GBVR GRBV GRVB GVRB GVBR VBGR VBRG VGBR VGRB VRBG VRGB I just made 24 unique combinations. That means that 4! is equal to 24. Factorials are useful, but it is tiring to do this process. The quickest way to do this is to multiply all integers before it. If you ...