Which of the following proposition is a tautology?

Related MCQs

• Consider the four statements: 1.(q==>p)٨(~p) 2. p==>(~q) V r 3. ~p==>~(p٨q) 4.p٨q٨~(pVq) Which one is tautology.
• consider the four tsatements: 1.(p→q) ٨(p٨~q) 2.(~p→r)٨(p↔q) 3.p→(~qVr) 4.~(p٨q) V (p↔q) Which one of these four ststements is a tautology.
• Find the negation of the proposition: “Michael’s PC runs Linux”
• Let A = {x, y, z}, B = {v, w, x}. Which of the following statements is correct?
• Consider the statement,“If n is divisible by 30 then n is divisible by 2 and by 3 and by 5.”Which of the following statements is equivalent to this statement?
• Which of the following statements is the contrapositive of the statement, “You win the game if you know the rules but are not overconfident.”
• Which of the following is the inverse of the statement: " If I eat a mango than I do not drink milk".
• If p= It is hot, and q= It is sultry, which of the following sentences in the appropriate version for the symbolic expression: -p٨ q
• which of the following is the contrapositive of the statement: " A quadrilateral is a square only if it is both rectangle and a rhombus".
• For a conditional statement p===>q, which of the following is incorrect.