Failed to connect to MySQL: Access denied for user 'examnext_online'@'localhost' (using password: YES) Which of the following pairs are not logically equivalent? - Sarthaks eConnect
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Which of the following pairs are not logically equivalent?

Which of the following pairs are not logically equivalent?

A.

~(~p) and p

B.

`p vv (p^^q) and q`
C.

~`(p^^q)` and (~p)`vv`(~q)

D.

~(~p`^^`q) and (p`vv`~q)

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