Probability

Multiplication Rule Calculator

Compute P(A∩B) = P(A) · P(B|A) with step-by-step work and a probability tree diagram. Check if events are independent.

Live Calculator · Step-by-Step · Probability

Inputs

P(A) — Probability of event A

P(B|A) — Conditional probability of B given A

P(B) — Probability of B alone (optional, for independence check)

Result

Enter values and calculate.

Step-by-Step Work

Your explanation will appear here.

Probability Tree Diagram

Put It Into Practice

The calculator shows the steps — a quiz proves you can do them on your own.

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