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
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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)。
( \0 b$ R1 p/ a8 T! B, h2 h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？』
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' x' n  d6 \3 d" Z注意: $ C, r- B' [( {7 {/ E) i

% }  d: {' `# V1. 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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. q3 X1 q: m9 O& S2 ]' ~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  , hide 字要連埋 , 內容 = 答案
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  {5 c1 t6 P; s! d8 {[ Last edited by playbr2 on 2007-3-1 at 11:54 PM ]

guswan

Originally posted by playbr2 at 2007-3-1 21:34:8 w! [* m! y  S
相信e條題目都有吾少人玩...

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我以前畫左個chart去答," g5 S2 f1 X3 Q2 M1 n: G
等我搵下仲在吾在
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當日用左37分鐘答１２粒波子，差７分鐘才合格。
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8 L1 |0 k: S6 a3 S: X[ Last edited by guswan on 2007-3-1 at 09:44 PM ]

playbr2

Originally posted by guswan at 2007-3-1 09:38 PM:
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" q+ ~8 L2 \4 W) W8 Q. R# [# E我以前畫左個chart去答,1 ]2 ^! |( j* o* q" k* t
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:
0 X. b! |1 L* i唔識隱藏...已經諗到..

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" U- o" n7 C+ X# q- V9 ]sor !!!....e加改左
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  l; u) ^  `# `) K2. 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, @/ ~1 i7 ?7 [, c* ]
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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:
& {# {  E4 \+ W' X  t3 \7 C7 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.
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Thanks

playbr2

Originally posted by Triangel at 2007-3-1 11:57 PM:
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. R5 h3 i' O) q" G' ]( y- S) IPlayPlay, Let me know later who has the right answer and I will add points accordingly., H% Q+ \; W; m' J# v

3 [# v1 A% Y; K' ]: VThanks

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! c6 O6 P4 n5 x$ g9 W. V# ~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
# B' s# ]8 Y% }: v9 V4 e$ l0 ]if 1-6 = 7-12     13 is fake
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0 w0 v, Z2 t6 h" o( Gif not
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2 V6 Z0 @# ]( R3 T2 [Weight the 2 time
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Suppose 1-6> 7-12: C! {7 C4 j) R  V* \0 ^
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1-3 vs 4-6
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8 p; l9 J- c& ?7 C9 M3 cThen Weight the Third# r& V4 n& F- ~$ b5 h+ \
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0 o' ?1 m3 V& G5 O5 [2 d4 B; ?Suppose 4-6 > 1-3; o' i% g' D, T' F. J$ |
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Just like the first Step2 s: q) N  p3 r* r' G
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4 vs 5
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; {. T/ s2 _1 n9 d& A+ kif 4=5 6 is the fake one , b' h) N2 t' ~0 ?7 M7 L2 \# Y" q! O

. x9 W- `, ]6 v+ Q0 j- Nif 4>5  4 is the fake one
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and so on......................

hello1997

分3組4隻波子秤
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- Y; z6 k0 K6 j1 V1 c- LGroup A: 1,2,3,45 z' e& `/ R3 o' S4 Y8 m) {4 G
Group B: 5,6,7,86 T: r. {7 [8 D' I$ s7 k7 M9 X
Group C: 9,10,11,12
1 O" P+ i6 ]2 @2 R6 p- sGroup D: 13
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8 i( l5 V4 V. Z9 gRound 1
8 c) _5 R: E5 i0 SGroup A vs Group B
- c5 r4 ~: O6 t, s# T$ C如A and B一樣, 即較輕一粒在Group C or D* Y+ r# P: _& G( p: u; F
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Round 2
# E" G  B* t! `% ?! a6 ]再在Group C拆成:
# B8 z! {1 E% }Group Ca: 9,10
3 Y! @9 i' D$ k* P# ?Group Cb: 11,12
. V6 I( K5 ~9 Q然後再秤, 如一樣, 即13為較輕一粒.
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如不同, 即較輕一組有一粒較輕波子在其中, 5 J- Y" d5 r# U! Y
要再秤, Round 3, 之後便知答案.
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; ^& E9 ^  R/ Ne.g. #1 假設10為較輕的一粒
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1,2,3,4 vs 5,6,7,8 = equal, S4 `$ \; P; p: R  {1 r2 K) T' G0 F

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5 a. U# ?" |7 ~% D" l8 t8 o7 S9,10 vs 11,12 = 9,10 < 11,12- H% b' S5 B. M$ z4 S* I9 f/ x
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Round 3; j& a% _/ \: G" Z  m0 w: U
9 vs 10 = 9 > 10$ y5 I, S1 @& B& s5 _* T

; s1 _( q6 X- Q" HThe answer is 10.
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' p1 p/ u4 _# o- W; |, w8 Ye.g. #2 假設7為較輕的一粒4 P5 o. u. D& ]: Z- J& |
Round 19 s4 D/ ?) a/ }, `3 g! C8 A
1,2,3,4 vs 5,6,7,8 = 1,2,3,4 > 5,6,7,8
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% P- m4 H7 q$ I; h/ eRound 2
4 X$ m  h! Y5 r- d# ]3 Y5,6 vs 7,8 = 5,6 > 7,8
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# N6 k# Q* K) H/ U$ q4 zRound 3# l0 S- _" k  ]' `8 S
7 vs 8 = 7 < 82 B, @7 t# e( `$ K/ |$ L& w

3 @& d0 B9 P( VThe answer is 7.5 Z( q  j- e) x. A$ m) X  V
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e.g. #3 假設13為較輕的一粒: u4 t' |: f; o9 K7 W
Round 1
8 @1 H2 Z; I5 a3 `1,2,3,4 vs 5,6,7,8 = equal
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1 W, V" Q% N& q9 j6 q6 WRound 21 C* \) V2 ^& x& x3 D( E/ r
9,10 vs 11,12 = equal
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No Round 3
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0 X5 k$ K6 J- E5 i) ]The answer is 13.: Z* h  T1 D$ v! {( }
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唔知我答得正唔正確呢?! 4 M+ s+ b$ o" w+ I8 a: v
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[ Last edited by hello1997 on 2007-3-2 at 12:39 AM ]

playbr2

Originally posted by Azuma at 2007-3-2 12:25 AM:0 t, A' y1 D# W2 [3 }7 I, b1 k' w
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1-6 vs 7-120 w; b) J0 \/ f
if 1-6 = 7-12     13 is fake
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Weight the 2 time
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4 _4 a5 r2 h0 h- i& @! hSuppose 1-6> 7-12: u, {7 ~" y3 u8 R) t
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1-3 vs 4-6 8 |( d: S* E7 g  a

- r) C1 H! p5 }4 M, m) c& VThen Weight the Third
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; R" S- [) ^( p+ l; \$ L: V) QSuppose 4-6 > 1-3
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# y' i8 l. u/ @  I6 RJust like the first Step, i3 i/ Z- R6 J4 Q* E
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4 vs 5
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8 Y  D! w6 ]" A4 I- q2 Dif 4=5 6 is the fake one 9 g6 ?3 k; v, ~# }2 K
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if 4>5  4 is the fake one $ W% ~% d" P8 R
and so on......................

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# _& n4 _( n* v1 P# L! {+ v問題第二步8 s8 G% I- z8 o( F; t# ]: i$ d
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Weight 1:  1-6> 7-12
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Weight 2:  1-3 vs 4-6 , if 1-3 = 4-69 J) g( X5 H9 D( U' h" \" e8 K7 i, n

9 ~( T! |9 n8 J3 H你第三步点去搵 7-12 边一粒???1 b: o5 G- C3 g' l5 ]1 ?  z. {

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- Z( Q6 u) _% ~6 C# S問題第三步
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8 g3 H6 T+ |/ b4 |4 F. G+ i# ?% XWeight 1:  1-6> 7-12
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Weight 2:  4-6 > 1-3
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& B5 T  L( W* g- W$ H2 o+ [! |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