1. Given the universal set U = {a, b, c, d, e, f, 1, 2, 3, 4, 5, 6, 7, 8, 9} let A = {a, b}, B = {a, c, 2, 4, 6}, C = {1, 2, 3, 4} and D = .

Give the contents, cardinality value, or truth value of the following.

a) |D|

b) D A

c) ~B

d) A B

e) (U B) C

f) C B