Red, White, and Blue Balls

Home / Puzzles in Education / Hands On Puzzles / Grade 7-8 /

There are three pairs of balls - red, white, and blue. In each pair one ball is a little bit heavier than another one. All the heavy balls weigh the same, and all the light balls weigh the same. Also you have a balance scale. 

Now, in just two weighings you have to determine the light and the heavy balls in each pair. How can it be done?

Posted: December 11, 2007
PDF Version (110 KB)

Step Through:

Four Stacks How Many Squares?
< Previous Next >
Discover More

< Home   |   Our Privacy Policy   |   About Puzzles.COM   |   Link to Us   |   Contact Us
Copyright 2007 ThinkFun Inc. All Rights Reserved.
ThinkFun - Everybody plays.