You place six jars (left to right: coffee, arsenic, and sugar on the top shelf; snuff, tea, and salt on the bottom shelf) and have somebody else fill them up with these ingredients, making sure each jar contains something other than what the label says.

You are told that the salt is located under the jar containing snuff, and that the sugar is located directly to the right of the jar containing coffee.

Where is the arsenic?

The jar labeled "sugar" contains the arsenic.

Posted by K Sengupta on 2008-12-29 00:59:00