1.

If p,q and r are simple propositions such that `(p^^q)^^(q^^r)` is true, thenA. p,q and r are all falseB. p,q and r are all trueC. p,qare true and r is falseD. p is true and q, r are false

Answer» Correct Answer - B
`(p^^q) ^^(q^^r)` is true which means that `p^^q` and `q^^r` are both true.
Therefore, p,q and r are all true,.


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