Let `p, q and r` be three statements, then `(p to q) to r` is equivalent to

Let p.q and r be three statements, then (~prarrq)rarr r is equivalent to

Let p, q, r be three statements. Then, ~(pvv(q^^r)) is equal to a) (~p^^~q)^^(-p^^r) b) (~pvv~q)^^(~pvv~r) c) (~p^^~q)vv(~p^^~r) d) (~pvv~q)vv(~p^^~r)

Let p, q, r be three simple statements. Then, ~(p vv q) vv ~ (p vv r) is equal to a) (~p) ^^ (~q vv ~ r) b) (~p) ^^ (q ^^ r) c) p ^^ (q vv r) d) p vv (q ^^ r)

If p,q and r are three statements then negation of compound statement of p to (~ r v~ q) is -