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Riddle - Tuesday, September 29, 2009
I recently came across MindCipher a site that has a small collection of decent user-submitted riddles. Here's one that I particularly enjoyed. It seems elusive at first, but once you figure out the implications of the hints and work it out on paper, it's pretty straightforward. It took me about 20 minutes of thinking it over while eating/showering and 10 minutes of working it out on paper.
Jack and his wife went to a party where four other married couples were present. Every person shook hands with everyone he or she was not acquainted with. When the handshaking was over, Jack asked everyone, including his own wife, how many hands they shook. To his surprise, Jack got nine different answers.
How many hands did Jack's wife shake?
Jack and his wife went to a party where four other married couples were present. Every person shook hands with everyone he or she was not acquainted with. When the handshaking was over, Jack asked everyone, including his own wife, how many hands they shook. To his surprise, Jack got nine different answers.
How many hands did Jack's wife shake?