SAT Math Multiple Choice Practice Question 370: Answer and Explanation
If a is a number chosen randomly from set X and b is a number chosen randomly from set Y, what is the probability that ab is greater than 20 but less than 50?
Correct Answer: C
C This table shows all of the possible values of ab:
Of those, only the seven shaded values are greater than 20 and less than 50, so the probability is 7/25.