this is too easy!!$ L/ ]2 j n$ t* O4 e5 s
$ y. z) \7 e2 Y ?3 G4 A( H
1. put 6 at each side.. take the one side which is heavier
6 F" }# F: W/ \- @, K2. put 3 at each side.. also take the heavier side
2 _7 l1 I6 a+ C9 d! N0 E: L: ]+ C公仔箱論壇3. put 1 at each side.. if the weight balance then the one not put inside is the heavy ball.. else the side which is heavier is the heavier ball.. |
發表於 2009-1-7 05:31 AM
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