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Set Membership, Subsets, and Complements
Grade Level
GMAT
Q.191 Set Membership, Subsets, and Complements
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In a finite universal set U, suppose A is a proper subset of B. Which complement relationship must be true?
A
A
c
is a proper subset of B
c
.
B
A
c
= B
c
.
C
A
c
⊆ B.
D
B
c
= U.
E
B
c
is a proper subset of A
c
.
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