Given the following sets: A = {1,2,3,4,5,6,7}, B = {2,4,7,9, 10}, C={1,3,5,7,9}, U = {1,2,3,4,5,6,7,8,9,10,11,12}
Find the following sets:
a) ( ∪ ) ∩

b) ∩
c) ∪
d) | X | e) |B X A|