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Questions  

Consider the following relations:

1 A-B=A-AB

2 A=ABA-B

(3) A-(BC)=A-BA-C

Which of these is/are correct

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By Expert Faculty of Sri Chaitanya
a
1 and 3
b
2 only
c
2 and 3
d
1 and 2

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detailed solution

Correct option is D

A-B=A-A∩B is correct.A=(A∩B)∪(A-B) is correct.(3) is false.∴(1) and (2) are true.

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Let U be the universal set and ABC=U. Then A-BB-CC-A' is equal to

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