Question

let U = {10,20,30,40,50,60,70,80,90} A = {10,30,50,70} B = {20,30,50,70} then find a)A'

Answer 1

Answer:

answer is {20,40,60,80,90}

Step-by-step explanation:

Given:

U = {10,20,30,40,50,60,70,80,90}

A = {10,30,50,70}

B = {20,30,50,70}

To find:

A'

Solution:

A'=U-A

=> {10,20,30,40,50,60,70,80,90}-{10,30,50,70}

={20,40,60,80,90}

Points to Remember:

The elements which are not belongs to A is the elements of A'

That is called complement of A

and it is denoted by A'