a) Use Mathematical Induction proof to prove expression: n2 = n(n+1)(2n+1)/6, n > 1
b) Create the truth table to illustrate that expression (p --> Q) V (~q ^p) is a tautologies
c) Create the truth table to illustrate that expression (r--> Q) --> p and (r V p) ^ (q --> p) and are logically equivalent.