返回列表 回復 發帖
答案!!!!!!!!!答案!!!!!!!!!!!答案!!!!!!!!!!!!!1
^:)^ >:D<
thx
let cc
not possible
不知道要怎麼做阿??
hao

the model answer is stupid

there got more simple way to do it, just read my way, the one i answered before
the
see 了
第一次,一边5个称,若质量没有异常就只称剩下的2个就知道异常的那个了;若有异常就把异常的那5个用一边2个称第二次,若没有异常就是剩下的那个异常了,若有异常就把异常的那2个再2一边1个称第三次就知道了
how?
先分3个一堆
2 P% t  J; d5 I+ W# y5.39.217.77共四堆公仔箱論壇  P0 J6 _' j* D7 G9 Q
称两次得出异常的在那一堆,其轻重
6 |# \, O4 D5 p5 U" ^4 a% t" _3 [  @在异常的那一堆中在称一次
5 h+ r* K! M. A) u+ P6 ?公仔箱論壇就可以找到了
divde the 12 balls into 3 sets of 4.
, T* W5 l2 a2 ?! s5 k5 q' _& uTVBNOW 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。weight any 2 sets.1 `: O, R& O+ h3 `# D
if the 2 sets are equal, then you know the heavy one is in the thirdtvb now,tvbnow,bttvb' L9 F9 }( e/ C% V: D4 e% g
if one of the 2 is heavier, then the heavy one is in that set公仔箱論壇6 T$ J( u- A- \$ f, V
then divide the 4 balls into 2.
5 [7 l/ v! P+ [0 x+ b9 s* cweigh them
: m0 L, n2 m7 I9 F8 t公仔箱論壇and divide the heavier into 1tvb now,tvbnow,bttvb% s7 S! u0 T% ~
and weight them.6 L- k2 x7 ^% F) v% H2 a
3 x weighing and get the ans.  
* X# f' J9 x4 X# b9 F5 `公仔箱論壇in less than 15 secs.
1. 6 aside and weight.
0 }6 w2 E1 P$ R: p9 ^( y5.39.217.772. heavier side from (1), 3 aside weight again.tvb now,tvbnow,bttvb. _, a0 ~7 t, f1 U: R9 n
3. heavier side from (2), take 2 out of 3 to weight. If equal weight the one not on the scale is the heavier one. else the heavier one on the scale is the odd one. 公仔箱論壇4 {6 N5 G2 d$ j. o4 ^- p
, A! e- g  x0 {1 n! h# J
but i have a question. 重量異常 can be heavier or lighter.... so......
返回列表