推理大挑戰(第四關)

playbr2

相信e條題目都有吾少人玩過,所以今次一於改難些少.....由12粒波子变成13 粒波子......不過對於識玩既朋友,應該都屬大同小異既啫) Q9 O6 f- O) n
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『有 13 粒波子，有 12粒是重量相同的，有 1 粒是重量不同的 (沒有列明是輕了 / 重了)。
) l! B7 `! |' b% F, m! c現准許使用 3 次天秤。請解釋怎樣才能找出 13 粒內那 1 粒重量不相等 (即是重了 / 輕了) 的波子呢？』- R1 A8 Z. H- }& m* ?  C
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注意: ) U. H/ U+ _# `

6 o4 s  F; }6 H. Y8 j1. 回答題目時,波子的名稱代號請用使用 1,2,3,.......至13 等數目代表, 即1 代表1號波子 , 13 代表13號波子.....以方便查證
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0 x/ t" E: }! p" m/ R. k1 o$ w+ B' W2. 請回答題目的朋友使用'' 反白功能 '' (即係將D字既颜色改為白色,白色颜色在黑色颜色上一行,透明的呢)穩藏回答答案,費事比其他人抄  , hide 字要連埋 , 內容 = 答案
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' L8 |) d) J; R' w! B! @7 U[ Last edited by playbr2 on 2007-3-1 at 11:54 PM ]

guswan

Originally posted by playbr2 at 2007-3-1 21:34:9 G" a& l& h' p# u( N4 J/ I0 d+ |
相信e條題目都有吾少人玩...

) v* n1 Z5 P$ x+ D4 K8 c4 D& L我以前畫左個chart去答,
/ {) x8 n! U7 ~' y等我搵下仲在吾在# x; e! s$ v( m5 E9 \# F! [6 ^

- h3 ^. E8 H: U. P, [5 L! b當日用左37分鐘答１２粒波子，差７分鐘才合格。
  t1 e% a. t% p/ M13.........$ G. [; s6 q+ X$ L

! \6 J. {1 \$ a1 q) {, U[ Last edited by guswan on 2007-3-1 at 09:44 PM ]

playbr2

Originally posted by guswan at 2007-3-1 09:38 PM:8 ]' O  f: E( N

0 J6 j; F5 t* ?7 B% Z- E- w+ a我以前畫左個chart去答,
6 w; H$ a! M- W等我搵下...

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記得穩藏答案

16749

唔識隱藏...已經諗到..

playbr2

Originally posted by 16749 at 2007-3-1 11:35 PM:
5 N& R2 o2 I% Q4 Y" N唔識隱藏...已經諗到..

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sor !!!....e加改左$ k. s) y" O  O5 J
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2. 請回答題目的朋友使用'' 反白功能 '' (即係將D字既颜色改為白色,白色颜色在黑色颜色上一行,透明的呢)穩藏回答答案,費事比其他人抄9 Q6 X$ ^/ g( u( @0 L# ?9 s" T( h( ]
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[ Last edited by playbr2 on 2007-3-1 at 11:55 PM ]

Triangel

Originally posted by playbr2 at 2007-3-1 09:34 PM:
. l; [8 C$ z% A+ L3 r7 k" Y相信e條題目都有吾少人玩...

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PlayPlay, Let me know later who has the right answer and I will add points accordingly.# ?2 F5 r% a5 x* ?
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Thanks

playbr2

Originally posted by Triangel at 2007-3-1 11:57 PM:; l+ B( F) |3 w/ q2 ]0 L
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PlayPlay, Let me know later who has the right answer and I will add points accordingly.% v- _9 n% w% m

4 a* l* W$ y9 Q4 eThanks

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不如你都玩吓喇....叫d叔叔加分咪得囉........如果岩既話

Azuma

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1-6 vs 7-12, G1 @* c! D/ w( P& S
if 1-6 = 7-12     13 is fake
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6 v4 X% P1 c' ], a4 s  @: i# J/ bif not
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1 G3 ~7 s/ |4 @2 wWeight the 2 time
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0 s' G' N; Q7 M8 D. w5 A# c7 NSuppose 1-6> 7-12) N0 ]2 W6 a% U
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1-3 vs 4-6 & Q" S4 u( i  B6 @9 F
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Then Weight the Third
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) X9 I$ s: [, t7 k" ]5 PSuppose 4-6 > 1-3  Q! C1 s6 C/ w4 R. O3 D7 S  N4 {

- I7 Q6 _; Z4 V. `; l, JJust like the first Step3 Q; \) w8 S4 W% N) s( h. d
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4 vs 5 3 G( ], j' t* V5 I9 C, F
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if 4=5 6 is the fake one , x9 l5 \" {, m
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if 4>5  4 is the fake one
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- \9 k* |' h7 K  W% ~0 t0 Kand so on......................

hello1997

分3組4隻波子秤" g! D- u' K# }3 P

, E- }# ]; U# U5 @6 [! iGroup A: 1,2,3,4
' {# Q& L# ?* l/ v2 J" SGroup B: 5,6,7,8% ~! A4 }1 n" Z* |' X+ P  D, u0 J
Group C: 9,10,11,125 O% J5 X% J- Y: O7 l3 v9 ~4 X
Group D: 13- b1 i2 Q% S1 J3 j4 t$ V

" y! B0 m# [8 l* k0 n2 uRound 1
6 h+ G  ~* K) `1 e3 [# SGroup A vs Group B1 n# p, }" d8 U# j- _
如A and B一樣, 即較輕一粒在Group C or D; B: @/ ]& O! x# q1 K) v

! K+ O5 F" f2 ?Round 2% L* c6 W; V; z! m5 i* O# R" @# V
再在Group C拆成:
, i5 q) B0 z' I" ]4 y4 ~* y. pGroup Ca: 9,10
/ c5 ]4 O1 Q; m# ZGroup Cb: 11,12. M% f8 W) P  M" w/ H
然後再秤, 如一樣, 即13為較輕一粒.# `  [: N# {& c6 @. J
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如不同, 即較輕一組有一粒較輕波子在其中,
' O: v4 T* L. c4 h要再秤, Round 3, 之後便知答案.
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e.g. #1 假設10為較輕的一粒
; I& c3 U5 B; [+ FRound 1
/ d8 `$ G  s- q3 q7 \! J1,2,3,4 vs 5,6,7,8 = equal+ B: |  z$ h4 r' o2 r: Q' F  o
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Round 2- t: ?( C7 O6 c4 \0 R. m6 ?" ~" `
9,10 vs 11,12 = 9,10 < 11,12
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Round 3! ]0 k; |* B6 w
9 vs 10 = 9 > 10
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$ Q; G$ D- }* S- x1 g( ?The answer is 10.+ Y% D3 z  b, t' R. {
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e.g. #2 假設7為較輕的一粒( I5 w7 M5 B6 V6 n# n8 R- H
Round 14 J( ^9 `4 H( o; ~; f
1,2,3,4 vs 5,6,7,8 = 1,2,3,4 > 5,6,7,8
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Round 28 l; D& I% N" c3 p
5,6 vs 7,8 = 5,6 > 7,8' j& e0 {6 C% P% q
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Round 3" e* A7 \1 }' C& t' e- B0 \" j
7 vs 8 = 7 < 8/ ]$ t& [1 e3 |1 D0 N5 o. z! o4 x
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The answer is 7.! |( r& y# l3 B* m. D

1 K" i6 h. F4 L# [+ n0 R! je.g. #3 假設13為較輕的一粒
: }. F: W8 d9 D8 u7 _Round 1
% B- r( p! b& [1,2,3,4 vs 5,6,7,8 = equal) V7 q$ H8 K, X8 q' g! T3 p
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Round 2+ I( R, p& }' j
9,10 vs 11,12 = equal* _; a! E' t7 ?. r: U7 ~* b- @

* z8 `. G; a: j& ENo Round 3" Y$ w4 c: ]& |& O- w" @1 z

8 C: p# |& S& Z  TThe answer is 13.
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" g/ o+ k. s; S4 ~: R2 H5 I唔知我答得正唔正確呢?!
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& c5 v7 l6 e' i1 I: ?, z[ Last edited by hello1997 on 2007-3-2 at 12:39 AM ]

playbr2

Originally posted by Azuma at 2007-3-2 12:25 AM:
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1-6 vs 7-125 I+ ~: L' f9 d! o7 |6 \
if 1-6 = 7-12     13 is fake
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if not
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5 j1 V: o+ l: \2 Z! W; zWeight the 2 time
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Suppose 1-6> 7-12$ b& {; e$ }* q  U4 u. u/ q

3 P! E- M- L9 [% i4 L9 n  h1-3 vs 4-6 9 j- Y, f2 U+ [1 ]0 @' i' v7 M6 V
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Then Weight the Third
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Suppose 4-6 > 1-3$ r- {3 i; O7 g8 P% p9 ?# q
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Just like the first Step7 u, M+ ]4 V/ g& R# x8 ?! y- a: e

+ u4 S& Y" }  M" N8 X6 Q4 vs 5
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: c5 H6 v( q% }if 4=5 6 is the fake one & i8 P: L7 d" }6 n! w
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if 4>5  4 is the fake one ' B0 T; L2 Y) @' B& x4 z$ Y' q
and so on......................

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0 t9 e( h9 P( j0 C問題第二步' L, M& L+ G; H$ k* }

& Q% i( m, w* O& p: a6 Z7 N. ?2 n* EWeight 1:  1-6> 7-12. O2 i% h/ E' M$ T/ Z# q, r

9 A5 i: J& M+ w" l( s1 tWeight 2:  1-3 vs 4-6 , if 1-3 = 4-6
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你第三步点去搵 7-12 边一粒???
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========================================
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問題第三步
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4 D: ?3 {& |  o" Z2 h8 OWeight 1:  1-6> 7-12
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Weight 2:  4-6 > 1-3
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$ d$ _: \; c6 B/ v- g% o. Z你又吾知粒波子輕D定重D ..... 咁点解第三步只磅4-6 吾磅1-3 . 如果個波子係輕D ,咁4-6 就一定一樣咁重