The dual of ` (p ^^ t) vv ( c ^^ ~ q)` where t is a tautology and c is a contradiction, is

(t ^^ p) harr p , where t is a tautology, is

Show that (p ^^ not q) vv ( not p vv q) is a tautology.

(c ^^ p) harr c , where c is a contradiction is

Write the duals of the following statements : (i) ( p vv q) ^^t (ii) p vv t) ^^ r (iii) ( p vv q) vv c Where t denotes tautology and c denotes contradiction.

Write the duals of the following statements : (i) ( p vv q) ^^t (ii) p vv t) ^^ r (iii) ( p vv q) vv c Where t denotes tautology and c denotes contradiction.

Show that ( p ^^ q) to (p vv q) is a tautology.

Which of the following is true for any two statements p and q? a) ~(pv~q)=~p^q b)~p^q is a fallacy c) (pv~q) is a tautology d)pv~p is a contradiction

Show that (p^^q)vv(~p)vv(p^^~q) is a tautology