Permutation ±Æ§Ç $$P_r^n$$ & Combination ²Õ¦X $$C_r^n$$
n= r=  Symbols (n<=10)
Permutation Pnr Combination Cnr
$$C_3^3 = 1$$
$$P_3^3 = 3! = 6$$
$$P_3^3 = 3! = 6$$
$$P_r^n = \frac{n!}{(n-r)!}$$ = $$C_r^n = \frac{n!}{r! (n-r)!}$$ =

statCrunch(dice) statCrunch(coin) Cnr Pnr coin


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