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Which of the following is not correct?...

Which of the following is not correct?

A

`bar(bar(A).bar(B))=A+B`

B

`bar(bar(A).bar(B))=A.B`

C

`bar((bar(A.B)).(bar(AB)))=AB+AB`

D

`bar(1)+bar(1)=1`

Text Solution

Verified by Experts

The correct Answer is:
D
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