this is too easy!!# y+ M; w2 u; |, C- J q
2 @0 U3 U# e, _( O/ U1. put 6 at each side.. take the one side which is heavier* x! t5 _2 @ j0 P: ^/ \6 s
2. put 3 at each side.. also take the heavier side
2 a) X) X6 I7 h# f* c3. 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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