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* F' V* t) Y5 ^# L
共四堆
1 h4 H8 d6 a- Y( `: O+ M) ~tvb now,tvbnow,bttvb称两次得出异常的在那一堆,其轻重公仔箱論壇% P0 ?. z& G! h7 V/ a
在异常的那一堆中在称一次
) C* ~1 o+ W+ e8 i8 t+ P5.39.217.77就可以找到了
divde the 12 balls into 3 sets of 4. ; D. z! B6 k1 r; j4 |4 S3 }! F) o) A. _
weight any 2 sets.公仔箱論壇4 h( M$ r9 |" G/ d+ H/ I6 m6 i
if the 2 sets are equal, then you know the heavy one is in the third5.39.217.777 _2 m2 B: L( W" N( S6 R
if one of the 2 is heavier, then the heavy one is in that set
! e1 g+ `1 g, Othen divide the 4 balls into 2.
4 `. ?2 H2 C. l" D+ X) y1 D1 N% ]weigh them
* O* V- z6 W/ r: u! RTVBNOW 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。and divide the heavier into 1+ M3 r: Y) j# H
and weight them.
. `, }, W) n9 G" gtvb now,tvbnow,bttvb3 x weighing and get the ans.  公仔箱論壇! |3 i! ], D7 F, `3 t6 F# b
in less than 15 secs.
1. 6 aside and weight.
' u8 f6 m) W* \, Z( R6 `公仔箱論壇2. heavier side from (1), 3 aside weight again.公仔箱論壇+ N3 ?5 e2 f$ S  y8 Z
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. tvb now,tvbnow,bttvb) V$ ?1 w) @! b( W: H

) w6 s, |0 [/ d+ q5 T' Q* T2 kbut i have a question. 重量異常 can be heavier or lighter.... so......
返回列表