METHOD
How it is calculated
C(n,k)=n!/[k!(n−k)!]; P(n,k)=n!/(n−k)!; Pr(X=k)=C(n,k)p^k(1−p)^(n−k).
∑ Math and geometry
Probability and combinations calculator
Calculate combinations, permutations and binomial probability.
01
Your inputs
Starting values are an example. Replace them with your own.
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02
Your result
Enter your details and run the calculation.
TRACEABLE
Sources and validity
Basic arithmetic or geometry using the formula shown. Uses only your inputs.
How we maintain data ↗