Question

Please help ASAP!!! suppose U = {1,3,5,7,9,11,13,15,17,19,21} is the universal set and A = {3,9,13,15}. what is A'?

Answer 1

The set A' is defined as
`A'=\{1,5,7,11,17,19,21\}`.

Explanation:

The universal set is

`U=\{1,3,5,7,9,11,13,15,17,19,21\}`

Set A is given,

`A=\{3,9,13,15\}`

A' means the set of all elements of universal set except the elements of set A.

`A'=U-A`

`A'=\{1,3,5,7,9,11,13,15,17,19,21\}-\{3,9,13,15\}`

`A'=\{1,5,7,11,17,19,21\}`

Therefore the set A' is defined as
`A'=\{1,5,7,11,17,19,21\}`.