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好難呀......睇答案啦...哈哈
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i also not so comfirm bout my ans.......so hope tat the ans i got nearly the same wit u
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回復第 1 帖由 MagicAndy 所發的帖子

divide it into pile and wait , then use the heavy side and divided into two pile and weight, and take out the heavy side which remain3 then take any two to weifht ,if both side even then the odd one is hte different one ,and if one side is heavier than the other ,then you know the answer.
see see

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let me see
first divide it into 3 groups... 4 for each group...( |+ e! h0 o: b) Y- B- p
den use 2 groups to test... if the weight is same... den throw away these 2 groups.. if not... use another 1 group to test with tat 2 groups... throw away the same weight groups...
; j% y9 U9 g- ~, R0 w" Ftvb now,tvbnow,bttvbden... left 4 balls..." l* G) l( k" s* [* _; D
when u use tat 3 groups to test... u oredi know it is heavier or not...www.tvboxnow.com2 x) Z; I) j4 @% F2 T4 [; ]* ]- {
so when testing these 4 balls... u juz nit 2 find out the heavier or lighter 1...TVBNOW 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。# ?! O9 U  e( \5 C! j4 g
take the heavier or lighter 1... throw away tat 2 normal ball...TVBNOW 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。5 W/ Y- P, {0 f* N
den u juz nit 2 test the last 2 balls...
( X2 ?/ ]/ c/ a/ W$ Ttvb now,tvbnow,bttvbsame for now... take the heavier or lighter 1...
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