Kisses & Handshakes


by Serhiy Grabarchuk, Jr.

Home / Puzzle Playground / Puzzles / Math 'n' Logic /

Kent and Hannah invited some of their friends at a dinner. Some friends arrived with their spouses while some arrived alone. Each guest greeted with every of the two hosts and with each other guest. When two men greeted each other there were handshaking. When two women greeted each other there were kissing. The same was true when a man and a woman greeted each other.

It is known 6 handshakes and 12 kisses have been done in total. Can you say how many guests arrived at the dinner, how many of them were in couples and how many of them were alone? Obviously, when two guests arrived as a couple they didnít greet each other.

Posted: August 27, 2008
PDF Version (102 KB)

More From the Author

Step Through:

How Many Minutes?   How Old is the Rose-Red City?
< Previous Next >
Discover More

< Home   |   Our Privacy Policy   |   About Puzzles.COM   |   Link to Us   |   Contact Us
Puzzle concept: Copyright © 2008 Serhiy Grabarchuk, Jr.
Web page: Copyright © 2008
ThinkFun Inc. All Rights Reserved.
ThinkFun - Everybody plays.