this is too easy!!
' X% [. Z* t: _- @; u4 i n- utvb now,tvbnow,bttvbtvb now,tvbnow,bttvb5 O6 C: i. e/ V' s0 [/ w B
1. put 6 at each side.. take the one side which is heavier
3 X0 V/ o' y% `6 b2. put 3 at each side.. also take the heavier side
% x0 G( e7 g" K. C- N; n3. 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
| 
