divde the 12 balls into 3 sets of 4. 5.39.217.77:88983 O* S2 ]2 q! ]+ h, Z7 J0 Z
weight any 2 sets.
) n% R5 S1 W3 L9 j& u: m; X; d公仔箱論壇if the 2 sets are equal, then you know the heavy one is in the third5.39.217.77:88988 i! R8 T7 v3 b% T
if one of the 2 is heavier, then the heavy one is in that setTVBNOW 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。3 c1 G9 Q4 d2 H+ d
then divide the 4 balls into 2.$ N( n6 J& g: F! Y. W
weigh themtvb now,tvbnow,bttvb) V/ u( _/ w+ B% X
and divide the heavier into 15.39.217.77:8898 V [1 K; {# p! t( A4 c
and weight them.
/ J) T' a8 O% M0 ?' T9 ^3 x weighing and get the ans. 公仔箱論壇( _: W3 t ?. u, Y: P4 U! I
in less than 15 secs. |