QUESTION 1 Which answer is an example of a product-of-sum (POS) expression? X = ABC X = AB + CD X = (A + B)(C + D) X = A + B + C QUESTION 2 Which Boolean equation results from this Karnaugh map? QUESTION 3 Which Boolean equation results from this Karnaugh Map? QUESTION 4 Anything ANDed with a 0 is equal to 0. 1. itself. its complement. QUESTION 5 The circles used on gate inputs and outputs are called inversion circles. inversion bubbles. connection dots. input/output bubbles. Solution QUESTION 1 : ANS = C QUESTION 2 : ANS= A QUESTION 3 : ANS = D QUESTION 4 : ANS = A QUESTION 5 := ANS = B .