A = {0, 1, 3, 6, -8}
B = {-1, 2, -4, 7,-5}
If a is a number that is randomly selected from Set A, and b is a number that is randomly selected from Set B, what is the probability that ab > 0?
Choose the correct choice:
A) 1/4
B) 1/3
C) 2/5
D) 9/25
E) 1/2
For the product of 2 numbers to be positive either both of them must be positive or both of them must be negative:   P(positive, positive) = 3/5*2/5 = 6/25;   P(negative, negative) = 1/5*3/5 = 3/25.   P = 6/25 + 3/25   = 9/25   Answer: 9/25
<result>D</result>
A = {0, 1, 3, 6, -8}
B = {-1, 2, -4, 7,-5}
If a is a number that is randomly selected from Set A, and b is a number that is randomly selected from Set B, what is the probability that ab > 0?