this is too easy!!
# U, y8 k3 l$ f+ X# g2 K公仔箱論壇$ ^3 j* M) V" i b2 y
1. put 6 at each side.. take the one side which is heavier
" ?' ?* S& e# u; W; w% c& ~% f6 B2. put 3 at each side.. also take the heavier side公仔箱論壇& i% E$ |! j+ W1 F7 }' x; {
3. 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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