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S1 Topic 3: Probability
Venn diagrams backmore
In each Venn diagram, the rectangle represents the sample space of possible outcomes, and the sets A and B are sets of events defined by a particular choice of outcomes within the sample space. Move your mouse over the Venn diagram to see the set described. Various different way of describing the same set are given after the main one in green.

A venn diagram B sd 
A È B

A union B
A or B or both		 venn diagram A Ç B

A intersection B
A and B		 venn diagram
A'

not A
A complement		 venn diagram B'

not B
B complement		 venn diagram
(A È B)'

A' Ç B'
not A or B		 venn diagram (A Ç B)'

A' È B'
not A intersection B		 venn diagram
A' Ç B

(A È B')'
B and not A		 venn diagram A Ç B'

(A' È B)'
A and not B		 venn diagram
A È A'

B È B'
the sample space		 venn diagram Ø

the empty set		 venn diagram

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