Question

If P = {1, 3, 6, 7, 9} and Q = {1, 2, 4, 5, 6, 7, 8}, find P ∪ Q.

a. {}

b. {1, 2, 3, 4, 5, 6, 7, 8, 9}

c. {1, 2, 3, 4, 5, 6, 7, 8, 9, P, Q}

d. {1, 6, 9}

Answer 1

B

Explanation:

P = {1, 3, 6, 7, 9} and Q = {1, 2, 4, 5, 6, 7, 8}

P U Q is the combination of all the elements in P and Q with repetition

P U Q = {1,2,3,4,5,6,7,8,9}

Answer 2

b. {1, 2, 3, 4, 5, 6, 7, 8, 9}

Explanation:

Given:

P = {1, 3, 6, 7, 9}

Q = {1, 2, 4, 5, 6, 7, 8}

P ∪ Q. is the combination of all the elements in P and Q , that is

P ∪ Q. = { 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9}