All about flooble | fun stuff | Get a free chatterbox | Free JavaScript | Avatars
 perplexus dot info

 Four balloons (Posted on 2016-01-12)
You are given four balloons: red, blue, green and yellow. Some (or all) of the balloons might be counterfeit.
A detector box can display the quantity of counterfeit balloons inside the box.
Your task is to detect all the genuine balloons using the detector box not over three times.

How would you do it?

Source: Russian Kvantik.

 No Solution Yet Submitted by Ady TZIDON No Rating

Comments: ( Back to comment list | You must be logged in to post comments.)
 re: Solution - no other in view | Comment 3 of 4 |
(In reply to Solution by Jer)

Jer,  I believe your set of tests (+ its permutations) is the only one providing different answers for all
16 (1+4+6+4+1) subsets of (A,B,C,D).
I’ve initially tried AB,AC,AD but it does not distinguish between A and BCD, - i.e. (1,1,1) in both cases.

 Posted by Ady TZIDON on 2016-01-13 17:57:34
Please log in:
 Login: Password: Remember me: Sign up! | Forgot password

 Search: Search body:
Forums (0)
Newest Problems
Random Problem
FAQ | About This Site
Site Statistics
New Comments (6)
Unsolved Problems
Top Rated Problems
This month's top
Most Commented On

Chatterbox:
Copyright © 2002 - 2018 by Animus Pactum Consulting. All rights reserved. Privacy Information