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( q* w8 [2 L( m4 t+ H: \
共四堆" o# f2 T/ r; Y  b' b
称两次得出异常的在那一堆,其轻重tvboxnow.com" y1 P" q' r3 v( P! v! y
在异常的那一堆中在称一次tvb now,tvbnow,bttvb' O8 \) g6 d% w& q& z. E
就可以找到了
divde the 12 balls into 3 sets of 4. TVBNOW 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。7 e' t: U' J2 g  T
weight any 2 sets.TVBNOW 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。4 K0 z$ r% Y" |2 q+ _0 B5 p
if the 2 sets are equal, then you know the heavy one is in the third+ s0 e5 J! x! O( P& a6 `  X# G
if one of the 2 is heavier, then the heavy one is in that set7 v. q7 y% {; H/ ?+ a
then divide the 4 balls into 2.tvb now,tvbnow,bttvb5 h3 \. T  Q( g! k) F7 g5 y. \' M
weigh them
2 M) ^& I& J, c* ~5 t& e$ \# gand divide the heavier into 1/ p: y. t3 A/ k7 q% Y& f+ X' ?
and weight them.
% r. ^+ w' Z+ t4 U6 \9 G; F) K3 x weighing and get the ans.  
) U6 H/ Z/ G$ |  Z+ Yin less than 15 secs.
1. 6 aside and weight.tvboxnow.com& A" Y' \' c+ U; u9 p8 B  n# M
2. heavier side from (1), 3 aside weight again." [/ G. u4 t, h: e- r
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. TVBNOW 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。0 z: X$ ?% x2 ]  f( w0 h0 G
tvb now,tvbnow,bttvb( [# O3 D- P, }8 q9 P
but i have a question. 重量異常 can be heavier or lighter.... so......
返回列表