brain twister, math problem!?
I invite 10 couples to a party at my house. I ask everyone present, including my wife, how many people they shook hands with. It turns out that everyone questioned - I didn't question myself of course - shook hands with a different number of people. If we assume that no one shook hands with his or her partner, how many people did my wife shakes hands with?
Comments
10, same as you, her husband.
Could be as many as 20. Not enough information to give a definite response...