divde the 12 balls into 3 sets of 4. www3.tvboxnow.com. [9 E' K( w7 ~( m. @5 H
weight any 2 sets.
* f/ h( h& Z1 K; f6 n, T% xtvb now,tvbnow,bttvbif the 2 sets are equal, then you know the heavy one is in the third
9 D2 r+ A2 S( `/ j1 dif one of the 2 is heavier, then the heavy one is in that setwww3.tvboxnow.com$ a) C: V( F6 \# c5 y
then divide the 4 balls into 2.www3.tvboxnow.com1 W1 F3 z2 d! D) O5 s s
weigh themtvb now,tvbnow,bttvb% W/ G" a! d4 t$ k1 a: h. A+ D
and divide the heavier into 1
+ ]/ W: b) j$ ~ t! @公仔箱論壇and weight them.
3 @2 F9 N p' L- Z3 x weighing and get the ans.
3 @( H% }' F3 t2 s* [0 Y/ u公仔箱論壇in less than 15 secs. |