Let A, B, C, D, E ⊆ Z be defined as follows:
A = {2n|n ∈ Z} —that is, A is the set of all (integer) multiples of 2;
B = {3n|n ∈ Z};
C = {4n|n ∈ Z};
D = {6n|n ∈ Z}; and
E = {8n|n ∈ Z};
a) Which of the following statements are true and which are false?
i) E ⊆ C ⊆ A
ii) A ⊆ C ⊆ E
iii) B ⊆ D
iv) D ⊆ B
v) D ⊆ A
vi)
b) Determine each of the following sets.
i) C ∩ E
ii) B ∪ D
iii) A ∩ B
iv) B ∩ D
v)
vi) A ∩ E
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