Question

If A = x , B = {x | x is an odd integer find a u b

Answer 1

A U B = x

Explanation:

If A=x then:

A = 1, 3, 5, 7, 9, 11, etc.

(Negative odd integers are also included)

and B= x

A = 2, 4, 6, 8, 10, 12, 14, etc.

(Negative even integers are also included)

We have that a u b is going to be the set of all integer numbers. That is to say:

A U B = x