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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, r" z0 e, o0 i! P  R『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)。
( @" \$ w* D* }" H) m2 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？』: l- N6 }! ~' Z" y2 L
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注意: : _3 o1 k8 V9 j. A$ u

! C& {/ W5 `# o" M1. 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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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% }% j2 y" t! y+ z
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[ Last edited by playbr2 on 2007-3-1 at 11:54 PM ]

guswan

Originally posted by playbr2 at 2007-3-1 21:34:/ R4 L) \& q  ^' g  X  T
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,% I( ^9 `$ x6 B- ?7 l* 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。1 @2 c0 K& @: {/ M$ I: U
13.........2 ]5 N  Y7 o2 z& X& @0 r
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[ Last edited by guswan on 2007-3-1 at 09:44 PM ]

playbr2

Originally posted by guswan at 2007-3-1 09:38 PM:; j5 X2 c. V7 q5 }8 ?' [6 g$ W

+ \# s7 P% R% u* O我以前畫左個chart去答,
5 O3 K, N# M' j, M; R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:
: H& P  n4 E5 w! l0 o唔識隱藏...已經諗到..

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sor !!!....e加改左
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1 z4 b: G* G5 d% k; M  P2. 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- y) w' I  O$ N5 t5 G( Y) {1 ]( y

1 i: F+ _/ ?8 k: B5 k/ a' U[ Last edited by playbr2 on 2007-3-1 at 11:55 PM ]

Triangel

Originally posted by playbr2 at 2007-3-1 09:34 PM:5 x& |# H# y1 o5 q
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.) F' Z8 T: b) Q7 a: G

! r& _  E5 F4 F! |% E3 |* l# jThanks

playbr2

Originally posted by Triangel at 2007-3-1 11:57 PM:! b7 H) X# \9 G$ _

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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

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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

1.2 O1 T  j7 N: v( R) E' G" w
1-6 vs 7-12
) n8 w& q, l0 ^. {  K9 ?if 1-6 = 7-12     13 is fake
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if not ' E. h- a% Z1 G4 F: g. A

, y1 X7 w. b  n  d9 ~$ C$ UWeight the 2 time 9 `! k2 e! I# m1 e2 D1 J* v1 b7 W

9 Q6 E2 V8 [* d) p7 S  u7 i, QSuppose 1-6> 7-129 p. O1 x& H3 {( _
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1-3 vs 4-6
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Then Weight the Third& i' N5 C  ~6 J' N% w  b  }
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Suppose 4-6 > 1-33 p& N# `; c) t

0 s9 q# c  X: z1 k& w0 r: AJust like the first Step! `2 T) k- v  m3 d& P( |
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4 vs 5
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! |. ]/ s6 H3 f0 `9 e8 e- i. Tif 4=5 6 is the fake one - F/ W  q; f% u

2 l4 W" }5 i9 f' |; D5 Sif 4>5  4 is the fake one ; r4 _3 e& B) j

* r+ |7 o' q' B7 Q& p+ w: V6 c8 fand so on......................

hello1997

分3組4隻波子秤! J! F" O' k1 U& n% S

# T8 K* V% L& k: t2 KGroup A: 1,2,3,4* Z5 @3 V! D# f
Group B: 5,6,7,8
4 `  I( e" [- |9 I( LGroup C: 9,10,11,12
. O& l* D; ]+ t8 Z! j- `2 @Group D: 138 {" d# h) [# g) E' [

- p$ P( c2 y3 v2 G% D5 MRound 1# `+ s8 Q! ~4 F% z8 R- Y5 L) s
Group A vs Group B! N. ^( N) h% |0 Q, `; N* e
如A and B一樣, 即較輕一粒在Group C or D0 E4 K" p7 R0 F0 c  p6 L) j
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Round 2
- J: c: o, [, Q% t再在Group C拆成:
0 S% V* e4 f$ l: N+ |Group Ca: 9,10
- Z) d  K4 s4 n- j) G1 }1 W% iGroup Cb: 11,12
3 }1 p+ X6 ^; \' e1 f' V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,
% a* }/ t+ H& S- Q, I7 f要再秤, Round 3, 之後便知答案.! b% V! m+ n" [( s

, |0 ~3 y  f* U( |. p7 U8 Ne.g. #1 假設10為較輕的一粒: D3 N7 ?6 y) P. J8 l4 K# h' _
Round 19 F, ^, m5 F. Y7 u0 `! H- K" v
1,2,3,4 vs 5,6,7,8 = equal5 o/ ?; F! D0 y3 Z  W2 J2 [: d

0 E$ b, p4 i8 ?2 pRound 2
" e4 ?- `4 \5 K  ?8 g" i9,10 vs 11,12 = 9,10 < 11,12) ]+ w2 C/ q% p' K- G
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Round 3
1 }: \1 O$ s8 t" B$ O9 vs 10 = 9 > 107 u9 @' I4 N4 n+ z, d

) s$ I2 X# c/ S/ D2 gThe answer is 10.
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e.g. #2 假設7為較輕的一粒
, q* }! y! U% S5 T: C2 xRound 1( {# F, M4 O: O7 w# F
1,2,3,4 vs 5,6,7,8 = 1,2,3,4 > 5,6,7,86 C3 U( j0 p: v8 m' W

+ X1 o* J0 V+ ^% }! g8 ARound 2
% z. Z$ `, G  s5,6 vs 7,8 = 5,6 > 7,87 {: N# X7 {9 ~) V" R
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Round 3
  z& n4 J& b1 F9 d/ T2 ]$ H3 c/ k7 vs 8 = 7 < 8+ ~1 |& r( c3 {2 I1 @# N1 F

, g  l* M: p! \# m! `' Q9 t  VThe answer is 7.) b* H6 T1 s; L, i) X8 ?

- U& a! ~) L6 H9 E" g3 _( w2 R/ Ie.g. #3 假設13為較輕的一粒" o7 U2 D+ N  J7 F
Round 1& G" Y/ \7 `% \( @: o
1,2,3,4 vs 5,6,7,8 = equal
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Round 2
3 }. t# F& c' X; w9,10 vs 11,12 = equal
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" X9 Y" x# a- {4 C' ]" I6 ENo Round 3
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% M  L% ^& n8 ]; f6 HThe answer is 13.8 z+ c8 \; T4 T8 @6 p

' r0 c' M; W5 L& Z  D8 n0 y) {/ d唔知我答得正唔正確呢?!
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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:4 B2 ^6 P( w  X7 o2 y
1.- @/ c1 E" f( S# d; v* A3 r) d  k
1-6 vs 7-126 C% p1 P: Q4 v! Y/ S
if 1-6 = 7-12     13 is fake& I6 n" C4 r, _9 E. l% [# O
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if not
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& z& G- C5 H( r6 IWeight the 2 time + _; I3 e; q! K. \
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Suppose 1-6> 7-12
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+ ?% ]5 M4 k" |$ {$ G* \" Z! G' c1-3 vs 4-6 ) G% l1 X$ y. P' M- l5 u8 V" a- }
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Then Weight the Third& ~6 e5 l) l( x/ x! h
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% X# V; q) Q* V7 fSuppose 4-6 > 1-3
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- s% W0 p9 g1 P! ]' _5 H# i3 yJust like the first Step
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! j7 n' b! C0 d+ ~- t. ?2 a+ l  b4 |4 vs 5
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7 f' u8 t: v2 Z+ u7 A8 U1 Aif 4=5 6 is the fake one
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if 4>5  4 is the fake one
! Z1 i( G7 h+ v! V2 S: x3 T8 Tand so on......................

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問題第二步
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Weight 1:  1-6> 7-12
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Weight 2:  1-3 vs 4-6 , if 1-3 = 4-6/ L: q2 {$ D% W/ n+ ~) ?

3 T# S* w9 g7 `) m3 f1 D$ D3 r) a你第三步点去搵 7-12 边一粒???! u) B+ j& N, z9 v; V' r2 G

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問題第三步- ]4 h( a4 Q' F

2 ?: \) ^$ ^& \7 zWeight 1:  1-6> 7-12
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8 A5 O% C, o' RWeight 2:  4-6 > 1-3
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/ s4 m, ]( c+ }' U( H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