Two numbers are chosen at random from the set {2, 3, 5, 7, 11, 13, 17, 19, 23, 29}. What is the probability that their sum is 24?
I will take a crack at this one:
Since you have 10 numbers and if you made an addition table of 10 x 10 = 100 sums.
I count 6 sums totaling 24. Therefore, the probability is = 6 / 100 =3 / 50
