Probability Calculator
Calculate probabilities for basic events, complements, unions, conditional events, and binomial distributions.
Probability30.0000%
Decimal0.300000
Fraction (approx)3/10
Formula3 / 10 = 0.300000
Formulas Reference
BasicP = events / total
ComplementP(not A) = 1 − P(A)
UnionP(A∪B) = P(A)+P(B)−P(A∩B)
ConditionalP(A|B) = P(A∩B)/P(B)
BinomialC(n,k)·p^k·(1-p)^(n-k)