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1#
發表於 2011-11-4 12:49 AM
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1. 1st divide to half take the heavier out公仔箱論壇1 M* Z- K2 ] O4 d
2. 2nd take 4 balls out of 5 divide 2 groups to get the heavier out. (if is equal thn the remain is the one u looking for)+ w5 D) [" I5 `4 G$ f; N6 V8 `
3. Same method if is not equal on 2nd try. |
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