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