6. Use a truth table to determine whether or not each of the following pairs of sentences are tautologically (TT) equivalent. (i) AɅ (BVC) (AAB) V (AAC) (ii) (PAQ) VR PA (QVR) For a satisfactory answer do the same five things (a) -(e) from Qu. 2 above, except that the verdict in each case will be either 'TT equivalent' or 'Not TT equivalent'. ABCAA (BVC) (AAB) V (A^ C) PQR (PAQ) VR PA (QVR) Are they TT equivalent? Is there a counter-example row? (Mark all such rows with a *.) Are they TT equivalent? Is there a counter-example row? (Mark all such rows with a *.)