Disjoint of Sets using Venn Diagram

Disjoint of sets using Venn diagram is shown by two non-overlapping closed regions and said inclusions are shown by showing one closed curve lying entirely within another.

Two sets A and B are said to be disjoint, if they have no element in common.

Disjoint of Sets using Venn Diagram

Thus, A = {1, 2, 3} and B = {5, 7, 9} are disjoint sets; but the sets C = {3, 5, 7} and D = {7, 9, 11} are not disjoint; for, 7 is the common element of A and B.

Two sets A and B are said to be disjoint, if A ∩ B = Ο•. If A ∩ B β‰  Ο•, then A and B are said to be intersecting or overlapping sets.


Examples to show disjoint of sets using Venn diagram:

1.

Disjoint Sets using Venn Diagram

If A = {1, 2, 3, 4, 5, 6}, B = {7, 9, 11, 13, 15} and C = {6, 8, 10, 12, 14} then A and B are disjoint sets since they have no element in common while A and C are intersecting sets since 6 is the common element in both.


2. (i) Let M = Set of students of class VII

And N = Set of students of class VIII

Disjoint Sets

Since no student can be common to both the classes; therefore set M and set N are disjoint.


(ii) X = {p, q, r, s} and Y = {1, 2, 3, 4, 5}

Disjoint of Sets

Clearly, set X and set Y have no element common to both; therefore set X and set Y are disjoint sets.


3.

Disjoint of Sets Example

A = {a, b, c, d} and B = {Sunday, Monday, Tuesday, Thursday} are disjoint because they have no element in common.


4.

Two Disjoint Sets

P = {1, 3, 5, 7, 11, 13} and Q = {January, February, March} are disjoint because they have no element in common.


Note:

1. Intersection of two disjoint sets is always the empty set.

2. In each Venn diagram βˆͺ is the universal set and A, B and C are the sub-sets of βˆͺ.

● Set Theory

● Sets Theory

● Representation of a Set

● Types of Sets

● Finite Sets and Infinite Sets

● Power Set

● Problems on Union of Sets

● Problems on Intersection of Sets

● Difference of two Sets

● Complement of a Set

● Problems on Complement of a Set

● Problems on Operation on Sets

● Word Problems on Sets

● Venn Diagrams in Different Situations

● Relationship in Sets using Venn Diagram

● Union of Sets using Venn Diagram

● Intersection of Sets using Venn Diagram

● Disjoint of Sets using Venn Diagram

● Difference of Sets using Venn Diagram

● Examples on Venn Diagram







8th Grade Math Practice

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