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Combining sets together
The union of sets and is everything in OR (or both).
Symbol:
Read: " union "
Think: Merge everything together, no duplicates.
See union in action
includes everything from both sets.
Click to highlight the union!
Finding common elements
The intersection of sets and contains elements in BOTH AND .
Symbol:
Read: " intersection "
Think: What do they share? The overlap.
See intersection highlighted
is only the overlapping region.
Click to see it!
Removing elements
The difference contains elements in but NOT in .
Symbol: (also written )
Read: " minus "
Think: Remove from anything that's also in .
See difference operation
See how and are different!
Order matters in difference.
Test union, intersection, difference
Which statement is always TRUE?