this is too easy!!公仔箱論壇' `/ Y& w$ q4 W
; _% {( C0 W0 x" R, d5 R" c1. put 6 at each side.. take the one side which is heavier* K- W& _: [$ x4 L, ^/ B$ W- b5 F
2. put 3 at each side.. also take the heavier side
- w8 w( Y# g7 i( d3. 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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