If p,q and r are simple propositions such that `(p^^q)^^(q^^r)` is true, then
If p,q and r are simple propositions such that `(p^^q)^^(q^^r)` is true, then
A. p,q and r are all false
B. p,q and r are all true
C. p,qare true and r is false
D. p is true and q, r are false
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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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