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Essentials Calculator

Free Probability Calculator for New Zealanders

Combine two events. Pick whether they are independent or you have a conditional probability P(A given B). The calculator returns P(A and B), P(A or B), and P(not A).

Events

0.30
01
0.50
01
Relationship
P(A and B)
0.15
independent events

For independent events, P(A and B) = P(A) x P(B) = 0.15.

P(A or B)0.65
P(not A)0.70
P(not B)0.50
P(A | B)0.30

About our Probability Calculator

Disclaimer: This calculator is for information only and does not constitute financial advice. Real-world figures may differ due to fees, rounding, rate changes, and policy specifics. Always confirm figures with the relevant provider before signing anything.