Indicate which of the following relationships are true and
Chapter 6, Problem 13E(choose chapter or problem)
Problem 13E
Indicate which of the following relationships are true and which are false:
a. Z+ ⊆ Q
b. R– ⊆ Q
c. Q ⊆ Z
d. Z– ∪ Z+ = Z
e.
f. Q ∩ R = Q
g. Q ∪ Z = Q
h. Z+ ∩ R = Z+
i. Z ∪ Q = Z
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