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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# P, b# u3 ?- T# g8 w
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)
$ q9 Q# I' O( ]- J' x3. Same method if is not equal on 2nd try. |
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