(3) For the following predicate statements, present a case that proves the statement is wrong. (10 pts. each) (3.1) f(x)=(5x)/(10x) has a real answer for all values of x. (3.2) If A is an integer, and B is an integer, and A!=B, then (AB)> A AND (AB)>B. (4) Prove the following by induction (20 pts.) Series: (1/(1(1+1)),1/(2(2+1)),1/(3(3+1)),1/(4(4+1)), \} Sum of Series =n/(n+1) (5) Flashback to Logic Week: Convert the following statements into logic gate diagrams. (10 pts each.) (5.1) ((A xor B) or (C and A)) nor (B nand C) (5.2) (!(!A and B)) xnor (C or (B and !C))