Probability Calculator

Calculate probabilities and combinations with ease

Permutation Calculator (P(n,r))

P(n,r) = n! / (n-r)!

Total number of items (n):

Number of items to arrange (r):

Number of permutations:

C(n,r) = n! / (r! * (n-r)!)

Total number of items (n):

Number of items to choose (r):

Number of combinations:

Number of favorable outcomes:

Total number of possible outcomes:

Probability: