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
$ M9 K' V6 g  ]4 a) Q4 B$ H6 w共四堆0 m0 J9 p# u3 M' O1 N
称两次得出异常的在那一堆,其轻重
; e" u0 l, @9 `- Y* d) W+ x* Xtvb now,tvbnow,bttvb在异常的那一堆中在称一次www3.tvboxnow.com6 ~. y( ~; R* J( m; r& o" N
就可以找到了
divde the 12 balls into 3 sets of 4. tvb now,tvbnow,bttvb' X+ W: @: o' w- I0 w& v
weight any 2 sets.
* ^0 c, X( S% Z. e3 V3 m2 tTVBNOW 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 thirdTVBNOW 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 I: D0 [0 I  x
if one of the 2 is heavier, then the heavy one is in that set
2 D& p6 [* @5 p) j6 E5 ]4 ^www3.tvboxnow.comthen divide the 4 balls into 2.
+ @! U  Z, A) W/ o3 g6 tweigh them
) L1 ^1 Z) F( G8 p0 c* q6 T1 |5 D公仔箱論壇and divide the heavier into 1
0 s4 J: m: A) S5 b& n3 N, H( zand weight them.
+ Q6 o0 ?9 \! u+ N/ fwww3.tvboxnow.com3 x weighing and get the ans.  
% I) J" J4 [1 S$ h9 h" x! M1 hin less than 15 secs.
1. 6 aside and weight.5 n9 z# h4 G: D% e
2. heavier side from (1), 3 aside weight again.
+ e' T* v: E$ v# s6 g3. 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.
  w) T# b& j) k/ `www3.tvboxnow.com公仔箱論壇6 R( j# O6 k7 Y1 x) n
but i have a question. 重量異常 can be heavier or lighter.... so......
返回列表