this is too easy!!
. q( O [4 o* r- F" G3 `
* @/ U; N7 j' H5 Ytvb now,tvbnow,bttvb1. put 6 at each side.. take the one side which is heavier" Q l6 T/ m. z
2. put 3 at each side.. also take the heavier side
! k3 ^. F: ~- W/ ]9 l3. 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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