Free practice on Types of Sets for Class 5, following the Cameroon primary school curriculum (English subsystem). Every answer is explained, so a parent who is not sure of the answer can still help.
Finite set = countable end (days of week). Infinite set = no end (counting numbers). Universal set = everything in the discussion. Empty set = no members, written { } or ∅.
| Type | Example |
|---|---|
| Finite | {days of week} |
| Infinite | {1, 2, 3, …} |
| Universal | {all school pupils} |
| Empty | {cats with 5 legs} = ∅ |
Equal sets: same members. Equivalent: same size, different members. Disjoint: no members in common — their intersection is empty.
| Relation | Example |
|---|---|
| Equal | {1,2,3} = {1,2,3} |
| Equivalent | {a,b,c} ↔ {1,2,3} |
| Disjoint | {cats} ∩ {dogs} = ∅ |
A Venn diagram draws sets as circles. The overlap shows the intersection. Everything outside the overlap belongs to just one set. Very handy for solving set problems.
A = {1, 2, 3, 4} and B = {2, 4, 6}. What is A ∩ B?
Answer: A. {2, 4}
The intersection holds only the members in BOTH sets.
A = {1, 2} and B = {2, 3}. What is A ∪ B?
Answer: C. {1, 2, 3}
The union puts all members together, without repeating.
Two sets with NO common members are called:
Answer: B. disjoint sets
{1, 2} is contained inside {1, 2, 3}. So {1, 2} is a ___ of {1, 2, 3}.
Answer: B. subset
A subset is a set inside another set.
In a Venn diagram, the part where the two circles overlap shows the:
Answer: C. intersection
The app holds every question on this page and hundreds more, works with no internet after the first load, and costs nothing. It fits on a shared phone.
