Harry R. Schwartz

Code writer, sometime Internet enthusiast, attractive nuisance.

The author at the Palais du Luxembourg in Paris, November 2022. hacker news gitlab sourcehut pinboard librarything 1B41 8F2C 23DE DD9C 807E A74F 841B 3DAE 25AE 721B


British Columbia



Puzzle Time


Published .
Tags: games, math, puzzles.

Because logic puzzles are a great way to start your day.

Mr. Smith and his wife invited four other couples to a party. When everyone arrived, some of the people in the room shook hands with some of the others. Of course, nobody shook hands with their spouse and nobody shook hands with the same person twice.

After that, Mr. Smith asked everyone how many times they shook someone’s hand. He received different answers from everybody.

How many times did Mrs. Smith shake someone’s hand?

(Stolen from Peter Ross, Napier U.)

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