Two mathematicians, Peter and Paul, met in the
street, and started the following dialog:
- I don't see you for a
long time. Are you married Paul?
- Yes I am and I have three daughters. Peter the
product of theirs ages is 36. Guess how old they are.
- I can not guess. You know, Paul, that I need
- The sum of their ages is equal to the number of this house.
Do you see the number Peter?
- Yes Paul I see it, but the informations you gave me are not
- The oldest play piano.
- Now I know their ages Paul
If Peter knowing the product and the sum of ages could not
guess them, is because their sum was 13 (cases 4 and 7)..
With the information that the oldest plays piano he could
guess that their ages are 9,4,4 (case 4)
Haroldo C. Branco.
Rio de Janeiro, Brazil