Question: Let A = {2,4,5,6,8} B = {1,4,5,9} C = { x | x Z and 2 x < 5} be subsets of S = {0,1,2,3,4,5,6,7,8,9}.

Let A = {2,4,5,6,8} B = {1,4,5,9} C = { x | x Z and 2 x < 5} be subsets of S = {0,1,2,3,4,5,6,7,8,9}.

Which of the following statements are true for all sets of A,B, and C?

a.

X A =

b.

(A B) (B C) = A C
c.

(A C) (A B) = A (B C)
d.

If A B = , then A B
e.

{} =

f.

B X A = A X B

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