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Library
Logic and Methods of Proof
Membership in an intersection
MCQ
An element
x
x
x
belongs to
A
∩
B
A \cap B
A
∩
B
. What can we state with certainty?
Possible answers
x
x
x
belongs to
A
A
A
or to
B
B
B
x
x
x
belongs to
A
A
A
and to
B
B
B
x
x
x
belongs neither to
A
A
A
nor to
B
B
B
x
x
x
belongs to the complement of
A
A
A
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