Choose the correct options for the following questions.
For any two sets A and B, (AUB)'=?
Difficulty: Easy
A:
A'UB'
B:
$A'\cap B$
C:
$(A\cap B)'$
D:
(A-B)'
For any two sets A and B, $A\cap B$=?
Difficulty: Easy
A:
BUA
B:
AUB
C:
B-A
D:
$A\cap B$
To find the complement of set A, which set is necessary?
Difficulty: Easy
A:
Natural number
B:
Whole number
C:
Universal
D:
Set B
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