perplexus.info :: Weights and Scales : Pearls

Pearls (Posted on 2002-05-23)

You have nine pearls, one of which is (as is usually the case in these problems) fake. You know that the fake pearl weighs less than the others, but it is (of course) impossible to distinguish from the others in any other way.

What is the minimum number of weighings that must be performed to find the fake pearl? How would you go about it?

See The Solution Submitted by levik

Rating: 2.7143 (7 votes)

Comments: ( You must be logged in to post comments.)

Subject	Author	Date
Solution for any P	Eric	2005-11-29 23:21:44
SOLUTION FOR P=15	K Sengupta	2005-11-19 00:33:47
re: Solution	Jason Taylor	2005-08-20 11:39:55
answer	vije	2004-07-02 14:55:03
Solution	Jenny Turner	2004-06-02 17:29:13
Solution	Andrwe Mitchell	2003-07-26 09:18:54
of course	Jonathan Waltz	2003-03-28 06:38:16
Easy	TomM	2002-05-23 13:22:50
Solution	friedlinguini	2002-05-23 11:42:52

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