Two new neigbours are chatting, one of them has three daughters. She says the other one :
- "Product of their ages is 36"
- "I haven't seen yet ! I can't find their ages !"
- "The sum of the ages is the number of our house"
- "It is still not enough !"
- "the oldest is blond"
- "Ah ! Yes ! then their ages are ...."
What does the hair color matter in that problem ??? But it is the key hint ! Solution