Quick Venn Diagram & Set Intersection Tool

When solving probability problems involving overlapping sets, calculating the cardinality of unions and intersections manually can be time-consuming. Use this quick widget to compute the size of the set union \(|A \cup B|\) using the Inclusion-Exclusion Principle:

2-Set Inclusion-Exclusion Calculator

Size of Set A — |A|:

Size of Set B — |B|:

Overlap — |A ∩ B|:

Union Size |A ∪ B| = 63

This simple formula follows: |A ∪ B| = |A| + |B| - |A ∩ B|.

Need full set visualizers, 3-set diagrams, or probability distributions? Try the complete online Venn Diagram Calculator for multi-set analysis and graphical outputs.