Section: Math
93)
What is the probability that a number selected at random from the set {2, 4, 5, 7, 9, 10, 12, 13, 18, 20, 60, 124} will be divisible by both 2 and 5?
Explanation
Answer 3 is correct. Only four of the 12 numbers in the set are divisible by five, but one of those -- 5 -- is not divisible by 2. So only three of 12 numbers qualify, or 1/4.
