Probability Calculator | Combinations Permutations

Probability Calculator

Calculate combinations, permutations, and probability

Combinations & Permutations

Total items (n)

Items to choose (r)

120

Combinations C(n,r)

720

Permutations P(n,r)

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

Single Event Probability

Favorable outcomes

Total outcomes

16.67%

Probability

1:5

Odds For

5:1

Odds Against

Independent Events

Event A probability (%)

Event B probability (%)

25%

Both (A and B)

75%

Either (A or B)