take 4 balls as a group, 3 groups - A B C5.39.217.77:8898* d! B+ c. x6 s) T: g+ N8 {
weigh A & B (ex. B heavier)
" j* B' D* N v/ e# |then weigh B & C (B & C same weight)
) P. m t/ g& E, a) I4 \) cTVBNOW 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。to find which group has the weight difference and find out is it (A is lighter)
5 `5 R( K+ I5 X* z. {) ~公仔箱論壇heavier or lighter
( q+ E4 |4 ` ~1 Y0 t% M公仔箱論壇then measure 2 vs 2 balls, EF vs GH, pick out the lighter group (EF lighter)- J' ]' i0 S) Z: g! o. S6 m
measure E vs F to find which 1 is lighter.... |