divde the 12 balls into 3 sets of 4. 8 P6 o% ?1 N2 t' u& T2 x1 l% Y
weight any 2 sets.
" m$ y8 O& p8 J& C: H0 U% N; f; VTVBNOW 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。if the 2 sets are equal, then you know the heavy one is in the third
3 ~. Y! ?5 P2 V6 qTVBNOW 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。if one of the 2 is heavier, then the heavy one is in that set
- {( ^3 M+ M/ X. x! ethen divide the 4 balls into 2.* j5 \4 S+ f' X( X
weigh them3 @' J+ t/ g3 E+ |
and divide the heavier into 1$ W6 @$ s/ M8 L G
and weight them." k% @& F7 E* J3 o& |
3 x weighing and get the ans. tvboxnow.com: R- `& s4 |7 [9 C
in less than 15 secs. |