- Alex and Bob meet on the street.
- Alex tells Bob that he has three children.
- Bob asks how old they are.
- Alex tells him that the product of the ages of his children is 36, and
the sum of their ages is equal to the number of houses on the other side of the street.
- Bob counts the number of houses and then says that this is not enough information for him to solve the problem.
- Alex then tells Bob that his oldest child's eyes are blue.
How old are Alex's children?