Raising the Question
How few times can you weigh 9 identical cookies on a balance scale to find the one with a gold ring inside?
How few times can you weigh 9 identical cookies on a balance scale to find the one with a gold ring inside? The answer is 2, but how?
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| This entry was posted by Warrick on January 8, 2010 at 7:49 pm, and is filed under Fun Questions, Puzzle Questions, Quiz Questions. Follow any responses to this post through RSS 2.0. You can skip to the end and leave a response. Pinging is currently not allowed. |
Two: first, put three cookies on each side. If scales are not balanced, choose the three heaviest, If they do balance, choose the remaining three. Then put two of the chosen cookies on the balance. If scales are not balanced, its the heaviest cookie. If they do balance, its the remaining cookie.
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