1.

If ` p rArr (q vee r) ` is false, then the truth values of p, q, r are respectivelyA. T, T, FB. T, F, FC. F, F, FD. F, T, T

Answer» Correct Answer - B
Given statement `p rArr (q vee r)` is false.
` because p to (q vee r)=(~ p) vee (q vee r)`
Now, by trial and error method, if truth value of p is T, q is F and r is F,
then truth value of `(q vee r) ` is F.
So, truth value of `[(~p) vee (q vee r)]` is false.
Thus, if truth value of p, q, r are T, F, F, then the statement `p to (q vee r)` is false.


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