" Which of the following is a tautology? "

Which of the following is tautology

Which of the following is tautology

Which of the following is tautology

Which of the following is tautology?

Which of the following is not a tautology?

Which of the following is not a tautology?

Which of the following is not a tautology.

If q is false and (p^^q) harr r is also true then which of the following are tautology

If q is false and (p^^q)harr r is also true then which of the following are tautology (A) (pvvr)-gt(p^^r) (B) (pvvr) (C) (p^^r)-gt(pvvr) (D) p^^r