divde the 12 balls into 3 sets of 4. tvb now,tvbnow,bttvb0 F5 e' M1 O, a7 \3 m7 Z* a5 ^8 ?
weight any 2 sets.www3.tvboxnow.com9 ^8 E2 @+ L) f
if the 2 sets are equal, then you know the heavy one is in the third公仔箱論壇+ h/ W5 ^+ h0 @1 _3 G: J
if one of the 2 is heavier, then the heavy one is in that set
0 n: [! M6 Z. h( V公仔箱論壇then divide the 4 balls into 2.公仔箱論壇8 \( Z4 {5 V5 w9 H {: e* g3 s' y
weigh them% ^/ G0 s. B0 p O
and divide the heavier into 1
& S, j: |6 Q" T9 f& d, K& _' k8 T6 V$ hand weight them.
# w# E e- y" M, ywww3.tvboxnow.com3 x weighing and get the ans. 公仔箱論壇8 l1 N# T9 k/ F( _1 T
in less than 15 secs. |