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Question
If A and B  are two given sets, then A ∩  (AB)cis equal to
Options:
A .  A
B .  B
C .  ∅
D .  A ∩ (Bc).
Answer: Option D
:
D
A∩(AB)c) = A∩ (AcBc)
= (A∩(Ac )∪ (A∩(Bc)
=∅∪ (A∩(Bc) = A∩(Bc).

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