Multiple choice If x = 1, y = 2 and z = 0, then the value of 3(x.y + y.z + x.z) + x is 2 6 4 7 None of these Reveal answer Fill a bubble to check yourself D Correct answer Explanation 3{(x.y + y.z + x.z)} + 1 = 3{(1) (2) + (2) (0) + (1) (0)} + 1 = 3 X 2 + 1 = 6 + 1 = 7