TAUTOLOGY AND CONTRADICTION

The proposition p rarr ~(p^^q)" is "a tautology contradiction. neither tautology nor contradiction. none of these

Using truth tables. Examine whether the stateements pattern (p^^q) v(p^^r) is tautology. Contradiction or continegency.

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

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

Which of the following is false? a. (p=>q)hArr(~ q=>~ p) is a contradiction b. pvv(~ p) is a tautology c. ~(~ p)hArr(~ q=>~ p) is a tautology d. p^^(~ p) is a contradiction

Which of the following is false? (p=>q)hArr(~ a=>~ p) b. pvv(~ p) is a tautology c. ~(~ p)hArr(~ q=>~ p) is a tautology d. p^^(~ p) is a contradiction

Verify whether the following compound propositions are tautologies or contradictions or contingency ((p to q) vv (q to r)) to (p to r)

Verify whether the following compound propositions are tautologies or contradictions or contingency (i) (p^^q)^^(pvvq)