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Which of the following is not equivalent...

Which of the following is not equivalent to `(p^^~ q)->r`
(a) `~(q v ~ p)->r`
(b) `~ r->(~ p v q)`
(c)`~((p^^(~ q))^^(~ r))`
(d) `~ r->(~ p^^q)`

A

`~ (qv ~p) rarr r`

B

`~ r rarr (~ p v q)`

C

`~r rarr (~ p ^^ q)`

D

`~((p^^(~q))^^(~r))`

Text Solution

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The correct Answer is:
A
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