take 4 balls as a group, 3 groups - A B C公仔箱論壇% E( K1 j8 s! T( Y. W
weigh A & B (ex. B heavier)* ]* W2 T9 s: y
then weigh B & C (B & C same weight)6 C& ~! U5 N) j- ^3 a1 S
to find which group has the weight difference and find out is it (A is lighter)
: p1 F1 U& C0 m/ y* \heavier or lighterTVBNOW 含有熱門話題，最新最快電視，軟體，遊戲，電影，動漫及日常生活及興趣交流等資訊。) _/ I0 d& P" s2 X4 I
then measure 2 vs 2 balls, EF vs GH, pick out the lighter group (EF lighter)公仔箱論壇5 ` j8 L) _4 X$ g
measure E vs F to find which 1 is lighter.... |
發表於 2006-12-6 04:55 PM
| 
