Two different integers are randomly chosen from the set {5, 8, 7, 4, -2} What is the probability that their product is negative? Express your answer as a common fraction.

5 C 2 ==10 ways of selecting 2 numbers.

These are all possible products of the 5 numbers:

(-16, -14, -10, -8, 13, 20, 28, 32, 35, 56) >>Total = 10

Probability is: 4 / 10 ==2 / 5