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)。- g$ X  d& v: l* z; w3 Q. J3 P
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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注意: : n8 e* N/ U1 ~. n- l
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1. 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
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1 h( `. S! a. U/ J) \5 ^[ Last edited by playbr2 on 2007-3-1 at 11:54 PM ]

guswan

Originally posted by playbr2 at 2007-3-1 21:34:
2 k' o2 e* C. M/ `! 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,
0 u# w) P8 q4 m等我搵下仲在吾在
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. g6 x. \( G2 d( ^0 X* E) {8 T' S當日用左37分鐘答１２粒波子，差７分鐘才合格。: h& i! n& _6 G7 N1 g
13.........
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$ H) {9 g, a2 A! g[ 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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0 e2 |% B5 `8 g) [2 |  E1 R6 X3 |: s我以前畫左個chart去答,
/ Q7 @9 z" h% e, |! 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:" T% u5 Y0 e; T, f3 Y
唔識隱藏...已經諗到..

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sor !!!....e加改左+ x% h/ S$ x& R7 h" p3 [

# Y4 {6 I3 X% C( \) ?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& c6 x0 h7 {2 f
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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:  c  ]7 r5 Q2 ~- K# H3 }
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.6 Y7 ?' N1 M5 G
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Thanks

playbr2

Originally posted by Triangel at 2007-3-1 11:57 PM:
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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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' c4 F6 m% T  ^' m$ s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 7-120 B, H, ~$ l7 [5 [0 F8 C' B9 V
if 1-6 = 7-12     13 is fake
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if not 3 U* m8 A4 O% K  d! X3 G3 u
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Weight the 2 time ( `8 c3 l4 [4 E+ D
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Suppose 1-6> 7-12
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1-3 vs 4-6 * _9 f& @; S% t2 x- I
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Then Weight the Third: N7 n7 v" O& z5 L. K1 p$ t- K# F
3.
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1 [1 D! p6 c/ t  C6 P/ BSuppose 4-6 > 1-3
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Just like the first Step7 @; Y$ S- s3 Y* a' i4 M
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4 vs 5
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3 f8 H' ~8 J: O6 Z( G- eif 4=5 6 is the fake one
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if 4>5  4 is the fake one 6 `) Y# V0 ?$ f
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and so on......................

hello1997

分3組4隻波子秤  @! h% d  }  W* U
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Group A: 1,2,3,45 L9 U$ ]5 R7 J+ @& J
Group B: 5,6,7,8
" \% h) j  X/ s9 U4 T- AGroup C: 9,10,11,123 ?/ @: b! a) M( m$ P1 b- X5 S  j
Group D: 13
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3 I& U+ Y7 J: Z/ x1 P& Q( K& _Round 14 @, e  d$ q) _8 |4 \
Group A vs Group B' O  w7 t/ g7 B" Q0 ^! z
如A and B一樣, 即較輕一粒在Group C or D5 q& E9 U1 H7 }7 p, i: _% H+ V
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Round 2
9 M3 ]1 g7 B2 y2 ?8 x3 G再在Group C拆成:% b1 ~9 q* ]! K; F* h
Group Ca: 9,10, h5 M; N; V' F8 q" y0 b
Group Cb: 11,12& `5 m- Y: \$ Y1 m7 A  \
然後再秤, 如一樣, 即13為較輕一粒./ I1 s- Q6 Q! l4 {- i# k0 T* r
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如不同, 即較輕一組有一粒較輕波子在其中,
3 G- K7 I: @* w) H- d要再秤, Round 3, 之後便知答案." V2 l1 m; l- C; r. V( ^
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e.g. #1 假設10為較輕的一粒8 @4 W5 n& N% p/ `$ X
Round 1% l) X' T0 ^6 S0 Z6 J/ f
1,2,3,4 vs 5,6,7,8 = equal: c$ Q+ x/ l: N1 |& n+ N

6 q; t+ q( W5 fRound 2
8 m, T( Q' P- F3 \7 J2 D' s9,10 vs 11,12 = 9,10 < 11,12
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Round 3
5 x( C/ }7 J- J( z3 y9 vs 10 = 9 > 10+ a/ F' x# U" C

0 o/ J+ \) n0 u, b6 YThe answer is 10.6 t6 e3 j0 [+ W2 i. t; I
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e.g. #2 假設7為較輕的一粒7 k9 ^5 A& B7 s# u* \9 Q4 W
Round 1# t! j) o$ b5 q4 ?# @  H
1,2,3,4 vs 5,6,7,8 = 1,2,3,4 > 5,6,7,8
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Round 2; l3 y2 ]  K$ d( i
5,6 vs 7,8 = 5,6 > 7,8
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Round 3
" l( k2 g0 W4 [7 y+ i& ~7 vs 8 = 7 < 85 x8 Q& _' \4 d% ]1 E
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The answer is 7.
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% l6 N& w6 D' D$ i1 T, H: G9 Ke.g. #3 假設13為較輕的一粒
; O! o6 N' B. ~# ^* lRound 11 ?; m. W# H! l5 Z4 D4 d
1,2,3,4 vs 5,6,7,8 = equal9 R9 p9 K8 J0 m0 p5 V! ^5 B2 q2 Q
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Round 2( o! D- _) ^5 p
9,10 vs 11,12 = equal! W  |9 q' K  ?; N0 N
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No Round 3  V7 n5 g$ v# J5 u( c
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The answer is 13.
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唔知我答得正唔正確呢?! 7 V( Z* B8 |) g( {- ~

5 g. _( J1 O) L, ][ 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 7-12- w. ]0 `/ q1 e
if 1-6 = 7-12     13 is fake' O% V# f- Y  H- S3 M

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Weight the 2 time
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9 X2 U' F6 h  _Suppose 1-6> 7-12
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1-3 vs 4-6 ) |0 R5 R' S5 F$ s3 ~8 k
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Then Weight the Third1 {+ {) H. v1 F6 G( l
3.
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- z9 o7 [  `8 X; J, E! lSuppose 4-6 > 1-39 U6 d* D0 D0 R3 e) F
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Just like the first Step
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4 vs 5 ; \+ U% F. Q0 j/ Y/ w. w" _
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if 4=5 6 is the fake one
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if 4>5  4 is the fake one
+ o& A0 r8 F  S, }+ N5 ]and 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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! q7 ?! a% f& Q9 u: uWeight 2:  1-3 vs 4-6 , if 1-3 = 4-68 k8 k+ S3 P" Q) P  q* }! e0 `
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你第三步点去搵 7-12 边一粒???
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========================================1 K) p) G/ U. A# Q( B

8 ?9 g+ a/ a& k% i1 g. V問題第三步3 ~4 q1 D# n+ N$ l5 \

" v- _, O/ P( J4 }( BWeight 1:  1-6> 7-12
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Weight 2:  4-6 > 1-3
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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