Question 1
Given:
A = {2, 5, 6}
B = {1, 3, 5, 9}
C = {1, 2, 6, 7, 8, 9}
Find: B ∪ C
Union of B and C:
{1, 3, 5, 9} ∪ {1, 2, 6, 7, 8, 9} = {1, 2, 3, 5, 6, 7, 8, 9}
{1, 3, 5, 9} ∪ {1, 2, 6, 7, 8, 9} = {1, 2, 3, 5, 6, 7, 8, 9}