The faces of a number cube are numbered 1 through 6. event a = {rolling a 1,
2, or 3). what is the complement of event a?
a. {rolling a 3, 4 or 5)
b. {rolling a 1, 2, or 3)
c. {rolling a 4,5 or 6)
d. (rolling a 2, 3, or 4}

Sanderson is having trouble with his assignment. his shown work is as follows: − 3 7 7 3 = − 3 7 × 7 3 = − 21 21 = −1 however, his answer does not match the answer that his teacher gives him. complete the description of sanderson's mistake. find the correct answer.