divde the 12 balls into 3 sets of 4.
2 R) `$ A; _3 u# _+ ~weight any 2 sets.tvb now,tvbnow,bttvb0 l! x& Q0 d0 E
if the 2 sets are equal, then you know the heavy one is in the third
! {1 |/ |) Z) q3 L& Dif one of the 2 is heavier, then the heavy one is in that set i1 p/ ]- [. S" Q9 }
then divide the 4 balls into 2.& o) r( r) B }
weigh them; A: f) Q3 d4 s/ V/ D2 x
and divide the heavier into 1
% I9 b0 t) N& R. X* i3 p4 Y5 Land weight them.
% i8 A/ Q) v, Y% s: y6 y) nTVBNOW 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 x weighing and get the ans. tvb now,tvbnow,bttvb$ Y( j6 b- o. ]( Y$ c7 x* U1 y
in less than 15 secs. |