Riddle of the Week #8: The 'Die Hard' Jug Problem

71 25/07/2022

This week's riddle is a nice easy one for the family to tackle over the holidays—maybe after watching the classic Christmas movie Die Hard. (Okay, the riddle appears in the sequel Die Hard With a Vengeance, the only movie in the original trilogy that is not set during Christmas time, but it's still a good brain-teaser.)


NYPD officer John McClane and shop owner Zeus Carver are in quite the predicament. A psychopath who calls himself Simon is detonating bombs all over New York City. McClane and Zeus find another bomb in Central Park, and to disarm it they need to solve Simon's riddle.

Riddle of the Week #8: The 'Die Hard' Jug Problem

The bomb is in a briefcase with a precise electronic scale. McClane and Zeus have a 5-gallon jug and a 3-gallon jug. They are standing next to a fountain where they can take as much water as they want. They have 5 minutes to put one of the jugs on the scale with exactly 4 gallons of water in it, or the bomb will detonate.

How do you get exactly 4 gallons of water into one of the jugs?


Just start filling up one of the jugs all the way and pouring it into the other one, and see where that gets you.


Once you have 4 gallons in one of the jugs, you can check the answer here.

*See all of our riddles here.

Jay BennettAssociate EditorJay Bennett is the associate editor of PopularMechanics.com.This content is created and maintained by a third party, and imported onto this page to help users provide their email addresses. You may be able to find more information about this and similar content at piano.io
Latest: This 'Open the Lock' Logic Puzzle Is Stumping the Internet. Can You Solve It?
Next: FriendO, a quiz app with NSFW questions, goes viral with teens
Popular Articles/span>
Back to top