How to spot it
What will the question look like?
The question describes groups or shows circles and asks what must fit where.
DM topic guide
Venn Diagrams
Reason about inclusion, overlap, exclusion and counts.
Guide page4 of 7
Venn Diagrams
Reason about inclusion, overlap, exclusion and counts.
Rules to remember
Keep these in view
- All places one set inside another.
- No removes overlap.
- Some guarantees at least one occupied region.
- Circle size is not numerical unless stated.
Common traps
What tends to pull students off course
- Double subtraction
- Forgetting the outside region
- Treating drawn scale as data
Venn Diagrams in context
With 80 people, X=45, Y=38 and both=17: X-only is 28, Y-only is 21, the union is 66 and 14 are in neither.
Ready to try Venn Diagrams?
We'll take you to the practice setup so you can choose your session length and timing.