this is too easy!!
5 w6 A: X U' Y1 } F3 i
" v6 T: I% p0 z: W$ a1 s$ |) ptvb now,tvbnow,bttvb1. put 6 at each side.. take the one side which is heavier公仔箱論壇& r5 A# d7 K. i6 ?+ o# {, R1 B5 s
2. put 3 at each side.. also take the heavier side
+ b' B; W8 k# E+ Q! wtvb now,tvbnow,bttvb3. 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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