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& R7 _/ F; s' U) L% t3 j
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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)。. R% `) b$ d- I# G( s& {
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:
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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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% }$ W; R2 |! r( |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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2 ~! v2 ?2 f$ Y* v5 S& I8 b3 y[ Last edited by playbr2 on 2007-3-1 at 11:54 PM ]

guswan

Originally posted by playbr2 at 2007-3-1 21:34:( _  M% b; D6 o+ X5 U1 q% @
相信e條題目都有吾少人玩...

' a8 v: u8 t; |+ o' f我以前畫左個chart去答,/ w2 L, v5 v" f  m- [0 f- X
等我搵下仲在吾在7 ?6 ?2 e, o. i, k' N* l0 O
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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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[ Last edited by guswan on 2007-3-1 at 09:44 PM ]

playbr2

Originally posted by guswan at 2007-3-1 09:38 PM:# e/ z' P3 s) ?, V  b

# L. t. O# n. G+ D+ e* y- D我以前畫左個chart去答,
7 M2 z2 y1 k. h. e等我搵下...

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$ Q* C4 G% F3 I4 j# z* Z3 g, J/ [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:+ d# A) ?* c9 A7 v' W+ J; l
唔識隱藏...已經諗到..

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1 n9 J1 }4 b# O. b- Z  Esor !!!....e加改左3 A8 ?. `2 g, [5 C9 ^! n

! }- w4 Z5 g- ?, d4 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2 f. N6 z9 ]. r* g3 z
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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:
. o/ e7 V/ m8 O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.0 a) w0 t$ D/ L- J' L& K
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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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/ T& c# E( n2 H" F* q1 D- A# HThanks

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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% O8 T* G4 _  T4 M7 }
if 1-6 = 7-12     13 is fake1 {$ Q. }: v% [/ {$ }! b

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Weight the 2 time   F' ^& M: f* X* F
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Suppose 1-6> 7-12% U+ X1 C! n- ^+ l. P1 U

. g! p' d( l% @/ j( j, M) h1-3 vs 4-6 * T* H7 X- v; j

4 d. [, c& D# r' }2 `! F. qThen Weight the Third
5 }$ o* X0 M; U0 {4 {& A. N9 @7 p8 J3.6 j1 O5 P" |9 C0 Y/ K0 x$ q
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Suppose 4-6 > 1-3! r: W% U) X& }3 C8 _; X6 F1 s) U

. c) X3 f9 w# {8 E8 A" [0 AJust like the first Step
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4 vs 5
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if 4=5 6 is the fake one
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if 4>5  4 is the fake one ; U7 {( P4 }, R; ^+ p

9 p2 }! {# r5 A" r' g' @# Kand so on......................

hello1997

分3組4隻波子秤! |9 x. ?- s+ l1 W: X0 `; m

( E+ w  f; F: k3 Y' \Group A: 1,2,3,4
: S, T1 S) W# M, b: @Group B: 5,6,7,8" i" h  s6 x) k/ h" @$ c( A
Group C: 9,10,11,121 _0 e& x& i: {8 e& e8 @
Group D: 131 |1 k. b0 S! E9 d5 m
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Round 1+ r6 D; ?* e% A* i9 H8 G* ^
Group A vs Group B! m0 i( ~! _" R+ B! q
如A and B一樣, 即較輕一粒在Group C or D
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Round 2' D. D7 y' Z/ `# [1 n
再在Group C拆成:
( z9 p) O1 O/ B3 y5 B) U, RGroup Ca: 9,10" ]  v* p0 |6 ^5 v5 C9 O" P8 [1 d/ A: d
Group Cb: 11,12
0 I- I7 Z1 w" l然後再秤, 如一樣, 即13為較輕一粒.
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* X$ C% s' ~3 m8 N5 a如不同, 即較輕一組有一粒較輕波子在其中,
5 N% u2 O; b$ D* K3 D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' z& Q2 Q) f3 b. s4 f
Round 1
& ?+ O( C1 b; Z7 O) L2 E, [1,2,3,4 vs 5,6,7,8 = equal* G/ w$ o, Q" `3 l( Q( A

1 `  T: h. W% ^, q3 jRound 2
& \. y3 T+ J' _* q  n9,10 vs 11,12 = 9,10 < 11,12  l0 ~& p$ P6 S* l+ |2 K; k) i$ Y

$ X3 Z3 Y# Z& @/ |2 |Round 37 `, W! a/ M1 I+ t. E
9 vs 10 = 9 > 10
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6 t6 `  C9 w$ n4 B6 M) ?The answer is 10.
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e.g. #2 假設7為較輕的一粒
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1,2,3,4 vs 5,6,7,8 = 1,2,3,4 > 5,6,7,8! }) @: b) A# M# P8 T- x, B
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Round 2
2 l  d- u* W3 B5 C3 N7 U5,6 vs 7,8 = 5,6 > 7,8; u- u  G( B4 v+ a" i

& ?. ?, l6 v2 b+ I2 T4 O1 PRound 3: u9 M' G: P2 L+ b9 E! N
7 vs 8 = 7 < 8
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The answer is 7.
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. a* B9 ~) n2 qe.g. #3 假設13為較輕的一粒, t2 ^% [0 `' X, j
Round 16 q# T5 N* N3 M) E3 q
1,2,3,4 vs 5,6,7,8 = equal
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Round 2
6 T5 }* a5 m/ f4 D, x9,10 vs 11,12 = equal
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% `, L2 M% l, u, {) K8 fNo Round 3
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The answer is 13.4 r: m" `, x$ k) ?5 r8 p
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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:
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; E# l: v* |/ x" q6 }. C0 J1-6 vs 7-12
! P0 l2 {* e# Q  _6 wif 1-6 = 7-12     13 is fake
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% `. s; D0 s# o( S! l1 \! GWeight the 2 time
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Suppose 1-6> 7-12( v4 u" A+ u+ y6 b
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1-3 vs 4-6 9 w1 A' H7 y& R* T- X) d
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Then Weight the Third  j- b, c" _, m6 l& L
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Suppose 4-6 > 1-3
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3 ~# B$ o$ p5 _5 S) ~Just like the first Step" X8 W3 p% z3 x0 x9 k4 x* {
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if 4=5 6 is the fake one
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5 V- Y9 h; `' P& p" i& Lif 4>5  4 is the fake one
* D9 Y9 _& v% wand 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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" `, `9 D' D1 vWeight 2:  1-3 vs 4-6 , if 1-3 = 4-6( O  P, g7 I% J  r* C1 k
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你第三步点去搵 7-12 边一粒???
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========================================7 G$ z5 p9 ^& H& X2 R

8 W6 V& `6 c) e5 M: [- k問題第三步
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Weight 1:  1-6> 7-12, _, l7 ]3 K+ u0 ~. y
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Weight 2:  4-6 > 1-3 1 G. o( T2 W1 \# }& U
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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