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Conjunction of four events

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Conjunction of four events diagram
calc
This calc takes the chances of 4 different events taking place and calculates the likelihood of various combinations of them taking place.
Probability of event A
Probability of event B
Probability of event C
Probability of event D

Chance of all happening
Chance of none happening
Chance of at least one happening
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notes
Fill in the four probabilities (0 is impossible to happen and 1 is certain to happen - alternatively use the menu to choose a different input unit such as %). The chances of vaious outcomes are given in the orange boxes.
Remember that CalcTool only quotes to 6 significant figures, so probabilities equal to or larger than 0.9999995 are displayed as 1.000000.