If A and B are two given sets, then A∩(A∩B)′ is equal to
A
B
∅
(A∩B′)
A∩(A∩B)′=A∩(A′∪B′) [∵(A∩B)′=A′∪B′ by De Morgans law ]
=(A∩A′)∪(A∩B′)
=∅∪(A∩B′)=(A∩B′)....((A∩A′)=∅)
If A and B are two given sets, then A ∩ (A ∩ B)c is equal to