I have a fun little problem our math teacher asked us at school, to illustrate a point.
Don't hesitate to use ISPOILER / SPOILER tags for the replies.
A vacuum cleaner salesman rings at a door and a woman opens. He delivers his speech and the woman says:
- I'll buy your product if you can answer this simple question. I have three kids, the sum of their ages is the number of this house, and the product of their ages is 36. How old are they?
The salesman thinks for a while, then replies:
- I'm sorry but I cannot answer your question...
The woman ponders on this for a few seconds then adds:
- OK, I can tell you the oldest plays piano.
The salesman thinks again, answers and sells his vacuum cleaner.
What are the kids' ages?
Don't hesitate to use ISPOILER / SPOILER tags for the replies.
A vacuum cleaner salesman rings at a door and a woman opens. He delivers his speech and the woman says:
- I'll buy your product if you can answer this simple question. I have three kids, the sum of their ages is the number of this house, and the product of their ages is 36. How old are they?
The salesman thinks for a while, then replies:
- I'm sorry but I cannot answer your question...
The woman ponders on this for a few seconds then adds:
- OK, I can tell you the oldest plays piano.
The salesman thinks again, answers and sells his vacuum cleaner.
What are the kids' ages?