Question

A number is selected from the set {1, 2, 3, 5, 15, 21, 29, 38, 500}. If equal elemental probabilities are assigned, what is the probability that the number chosen is either less than 29 or odd?

7/9
6/9
8/9

Answer 1

So let's first see which numbers are less than 29

they are
1, 2, 3, 5, 15, 21

And then we have `or odd`, this means that 29 can be added to the list

1, 2, 3, 5, 15, 21, 29

Answer 2

So we have 7 out of hte 9 numbers