this is too easy!!
9 l/ _8 \# }6 W3 [9 p7 K; l" X0 Y5 y6 w
1. put 6 at each side.. take the one side which is heavier) `# `% g% O0 \
2. put 3 at each side.. also take the heavier side" H7 d/ b5 M- @$ n7 r% z
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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