divde the 12 balls into 3 sets of 4. 5.39.217.775 i- ^* H* \/ S% H
weight any 2 sets.tvb now,tvbnow,bttvb" I& e; T4 g0 g; r5 T# j
if the 2 sets are equal, then you know the heavy one is in the third+ j! h4 ~3 P/ H
if one of the 2 is heavier, then the heavy one is in that set5 j$ v2 o: p( X. c
then divide the 4 balls into 2.5.39.217.77( Q1 s$ m: P( m
weigh themtvb now,tvbnow,bttvb, D* Y" }6 T; e; Z
and divide the heavier into 10 S+ y& h; B0 \
and weight them.
d0 S& L. X; gTVBNOW 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.
8 ^5 t( b" \, B& Z1 q5 d5.39.217.77in less than 15 secs. |