divde the 12 balls into 3 sets of 4.
+ S. X0 b, z$ t4 l* O" dTVBNOW 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。weight any 2 sets.os.tvboxnow.com1 d+ r1 C( {' z
if the 2 sets are equal, then you know the heavy one is in the third
: o& i: I% u, a7 \: oTVBNOW 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。if one of the 2 is heavier, then the heavy one is in that set# o' E1 u1 k0 P1 E; m- j/ Y* P
then divide the 4 balls into 2.
; O& u) x Z5 Y" y2 ~weigh them6 `# M& O: x2 M$ A. P- W' P
and divide the heavier into 1$ ~" t# s& I/ x, D
and weight them.公仔箱論壇" O# m2 H4 b/ p; \
3 x weighing and get the ans.
E2 r' {% Q5 Jtvb now,tvbnow,bttvbin less than 15 secs. |