Probability

Addition Rule Calculator

Compute P(A∪B) = P(A) + P(B) − P(A∩B) with step-by-step work and a Venn diagram.

Live Calculator · Step-by-Step · Probability
Inputs
Result
Result
Enter values and calculate.

Step-by-Step Work

Your explanation will appear here.

Venn Diagram — A ∪ B
Put It Into Practice

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

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