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The negation of qvv(p^^r) is...

The negation of `qvv(p^^r)` is

A

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

B

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

C

`~qvv(p^^r)`

D

none of these

Text Solution

Verified by Experts

The correct Answer is:
A
Contrapositive of `p to q` is `~q to ~p`
Therefore, contrapositive of `(pvvq) to r` is
`~rto ~(pvvq)`
`-=~r to (~p ^^~q)`
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