Question

Let the set A is a {1,2,3}and B is {2,3,4} then set A-B is
Then set A-Bison
a) {1,-4}
6) {1,2,3}
c) {1}
d){2,3}​

Answer 1

Answer:

option c is correct

Step-by-step explanation:

A={1,2,3} and B={2,3,4}

then A-B={1,2,3} - {2,3,4}

={1}

Answer 2

$\sf\huge\bold{Answer:}$

$\fbox{option a) is correct answer}$

={1,4}

Given :

A = {1,2,3}

B ={2,3,4}

To find :

A - B

Solution :

The subtraction of two sets is a subset that gives the uncommon values from both sets.

A = {1,2,3}

B ={2,3,4}

A-B = {1,2,3} - {2,3,4}

A-B = {1,4}

Uncommon values in A and B = 1,4

$\huge\mathrm\red{A - B {}}$

= {1,4}

• Refer attachment for better view of situation

Also,

• Finding A-B using formula,

A-B = A U B - A∩B

A-B = {1,2,3,4} - {2,3}

A-B = {1,4}

Let's Know More:-

• There are 4 operations on sets.

1. Union
2. Intersection
3. Difference [used in above solution]
4. Complement

• The universal set is the set containing all objects or elements and of which all other sets are subsets.

• The complement of a universal set is an empty set U′ = ϕ.

• The complement of an empty set is a universal set ϕ′ = U.