Venn Diagram Practice — Three Sets

Practice bank for three-set Venn diagram questions in UCAT Decision Making.

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Quick-Reference: Three-Set Venn Diagrams

The Inclusion-Exclusion Formula (3 Sets)

$|A \cup B \cup C| = |A| + |B| + |C| - |A \cap B| - |A \cap C| - |B \cap C| + |A \cap B \cap C|$∣A∪B∪C∣=∣A∣+∣B∣+∣C∣−∣A∩B∣−∣A∩C∣−∣B∩C∣+∣A∩B∩C∣

The Seven Regions (Plus "Neither")

Region	Formula
A only	$
B only	$
C only	$
A and B only	$
A and C only	$
B and C only	$
All three	$
Neither	$\text{Total} -