If `p and q` are two statement then `(p <-> ~ q)` is true when : (a) `p and q` both are true (b) `p and q` both are false (c) `p` is false and `q` ia true (d) Non of these

~(p to ~q) is true when

If p and q are two statements then (p

If p is false and q is true, then

p ^^ q is true when : ( a) p and q are both true (b) p and q are both false ( c ) p is true and q is false ( d) p is false and q is true.

If both p and q are true, then

If p and q are both false , then p rArr q is .

Suppose p and q are two statements and - p ^ q is true, then truth values of p and q are respectively

For any three simple statement p,q,r the statement (p ^^ q) vv (q ^^ r) is true when- (a) p and r true and p is false (b) p and r false and q is true (c) p,q,r all are false (d) q and r true p is false

If p and q are true and r is false, then