Class 9 unit set language Explains set with examples Types of sets with examples : finite set , infinite,null, singleton, universal sets Simple language With pratice questions

1. Presented by :
S Jahapriya
25-EDM-14
Pedadody of Mathematics
Types of
set

2. 2
What is a Set?
A set is simply a collection of well-defined objects,
known as elements. For example, the set of vowels in
the English alphabet includes {a, e, i, o, u}.

3. 3
Types of Sets

4. 4
Finite and Infinite Sets
Finite Sets
A finite set has a limited
number of elements. For
example, the set of fingers
on one hand, which
contains exactly five
elements: {thumb, index,
middle, ring, pinky}.
Infinite Sets
An infinite set consists of
endless elements that go
on forever. A common
example is the set of
natural numbers, which
starts from 1 and
continues indefinitely: {1,
2, 3, ...}.
Key Characteristics
Finite sets can be counted
and listed, while infinite
sets cannot be fully
enumerated.

5. 5
Empty or Null Set
An empty set contains no elements,
represented by the symbols or {}.Example
∅
a set of months that have 32 days

6. 6
Singleton Set
A singleton set is a collection containing
exactly one element, such as {0}. Eaxmple set
of even prime {2}

7. 7
Equal Sets
Equal sets are those that contain exactly the same
elements, regardless of their order. For instance,
{1, 2, 3} and {3, 2, 1} are equal sets.

8. 8
Universal Set
The universal set is defined as the set that
includes all possible elements under
consideration for a particular discussion or
problem, forming the basis for other sets.
Universal Set

9. Engaging
Practice
Problems on
Sets
Is the set of months of the
year finite or infinite?
Are the sets {a, e, i} and
{i, e, a} equal sets?

10. Understanding sets is essential
It makes many things easier and
simple
Conclusion
Thank you