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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1 T$ B1 [# d0 u; g『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)。
# P$ |; e) _5 W  w* r$ G! N) Q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？』* t5 D- J3 j% r* \
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注意: ' Y) Z% T  s3 K, T2 k

% U. E  C0 Y- E4 F1. 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. ]4 I9 O' r( C' G

# h7 r. Q0 B. w; X2 A2. 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; W* ?1 g; R% o- i/ r/ I4 ^$ d
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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:
& K! w2 _; F- N" X# h( {* J# Y0 ^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,
# k7 y) ^1 G1 {' `9 E等我搵下仲在吾在
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, a: E2 d6 [# Q6 H. V8 O& B當日用左37分鐘答１２粒波子，差７分鐘才合格。
1 i) X3 q* s1 C# s) i7 X' k" t13.........
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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:& ~' M' q3 ?7 m- L

( q  K; w& Z2 X% m( W5 y  n+ D我以前畫左個chart去答,1 N% Q. i# |6 v, f( r+ w5 B( N. h7 n
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:) E4 L  `1 D! m4 o; l
唔識隱藏...已經諗到..

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sor !!!....e加改左1 X% b4 A# d! n2 G. B! Q

! w/ Q7 ?0 }+ u& ?: l! T; N2. 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
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0 t1 [+ l6 f$ ~  P' O4 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:9 Y7 B6 m) R6 n- x1 }. B8 L
相信e條題目都有吾少人玩...

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4 N# u" l1 f; O, X' N- b: L! ]; JPlayPlay, 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:) T" P; \3 n3 K4 u6 R. E

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PlayPlay, Let me know later who has the right answer and I will add points accordingly.3 C3 o8 A7 g7 Z8 j8 w/ {

& [& l- f* I0 V% B4 t& i4 mThanks

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( M6 Q$ `% S+ B0 ]2 P/ a5 N不如你都玩吓喇....叫d叔叔加分咪得囉........如果岩既話

Azuma

1." }( T4 P- K7 d: n$ x
1-6 vs 7-12/ _6 Q& W6 D' j9 e/ b
if 1-6 = 7-12     13 is fake
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if not
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) p' z$ e. P: a' r2 ~Weight the 2 time 6 u/ T! q6 r; G- I
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Suppose 1-6> 7-12
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1-3 vs 4-6
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Then Weight the Third
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. J4 b# q, c: qSuppose 4-6 > 1-3* }, _4 O; j& I+ r: i5 B6 ?3 H- T

) S, E/ s. K. F7 T' Y( G) k* EJust like the first Step, `$ }3 n- N+ g2 E$ X# e) K

8 x1 L: ?" e9 }  y0 w3 ~- @9 ^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
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and so on......................

hello1997

分3組4隻波子秤' v2 N# W. U! [0 o* O' }
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Group A: 1,2,3,4
3 ~& j, V7 P9 u( A' j" B7 |# D/ KGroup B: 5,6,7,8
4 F6 `) }: V5 w# sGroup C: 9,10,11,12
. |* M. Q3 |' @' P( l3 nGroup D: 13
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0 l8 z5 L/ C3 GRound 1
4 o8 r0 A7 V  T  p3 kGroup A vs Group B! y' w' j# i& w; W
如A and B一樣, 即較輕一粒在Group C or D7 Q; h3 {4 F, n, E/ E( e' s

1 u) K. L' N9 S7 m, ~Round 2
% Q+ z) u% |+ A; I再在Group C拆成:
; [: p4 K/ |% ]6 tGroup Ca: 9,10. h6 P( W; Y& n* g
Group Cb: 11,12
  `2 E3 g: i, T7 J8 ~1 C) `. K- 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,
& M3 _, P- B# G( Y8 H3 R要再秤, Round 3, 之後便知答案.+ z# g$ r: P0 o: a
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e.g. #1 假設10為較輕的一粒
* }' G. E2 v8 o" ~  ARound 1
1 [* R! f/ t' W1,2,3,4 vs 5,6,7,8 = equal* g8 @0 \4 N: U) ~& T* f4 X

: i" N) k& |7 I# L9 ^Round 2
, `& c) J) B. U. s9,10 vs 11,12 = 9,10 < 11,12
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9 vs 10 = 9 > 105 E5 w' [$ \! I# S7 z
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The answer is 10.6 w- m" m; J, B2 T
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e.g. #2 假設7為較輕的一粒
6 L9 _0 d9 F5 R+ l+ r8 aRound 1! p, F# L  L0 }9 B6 k
1,2,3,4 vs 5,6,7,8 = 1,2,3,4 > 5,6,7,8  T+ C) ?& _- i

. P6 ^: m& B6 VRound 2
) J8 V$ ^' q7 J$ u2 ?% H9 O5,6 vs 7,8 = 5,6 > 7,8+ ]' y. B! r# b9 i3 V
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Round 3
$ T5 l, Y. G' ?8 g& G/ c; a9 Z3 d7 vs 8 = 7 < 8; _3 g8 O. P8 C6 A7 x, Z- p

" d7 X; g' ]' i* E" YThe answer is 7.* o. Q+ |2 ~' G0 o1 R* _  V" ^

' l$ @' w, Q2 z. H) {4 {. Ce.g. #3 假設13為較輕的一粒
$ s6 z8 D- T4 q- @4 fRound 1" j+ Y5 G. Z9 ]/ ?$ L
1,2,3,4 vs 5,6,7,8 = equal
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Round 2
, C& @6 P, g0 i3 K. ^+ l9,10 vs 11,12 = equal
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  `# V4 J! p4 {5 FNo Round 3! b( V8 N1 x+ F  b
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The answer is 13.; ]+ u! D: m$ p

7 v# k  g+ @* m+ L唔知我答得正唔正確呢?!
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5 \% h/ k* N+ _7 d/ i[ 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 d) y: O( K7 }7 w* e! Y
1.
! R7 Q- ?* `; G' k1-6 vs 7-129 M* S& p7 F( H& t. s0 h/ v
if 1-6 = 7-12     13 is fake1 [# t6 Q2 B, S1 n" N
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if not
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Weight the 2 time
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5 y4 h- A* j# R6 ?Suppose 1-6> 7-123 {5 v, {" M* A) y

0 j0 R, j$ Z7 }# \1-3 vs 4-6 * i) v& d3 N: U$ V5 K. J! v; m' {* b# ]
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Then Weight the Third/ Z5 E; V7 s& q6 b- p
3.
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Suppose 4-6 > 1-3
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* ]0 p% R1 Y! w' ]9 DJust like the first Step
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4 vs 5 0 V( V5 F( x/ C# Z

- I) A4 z, C' }& J2 Aif 4=5 6 is the fake one ! H6 f4 T1 w) V+ J

# `, C$ Z: x  a1 p6 y6 \5 }% \8 Kif 4>5  4 is the fake one
& [* B  R! `4 ]/ U3 ?2 m. w& wand so on......................

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問題第二步7 B: ?5 M3 D# L/ o
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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
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你第三步点去搵 7-12 边一粒???! q9 }# k3 l$ p

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問題第三步
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Weight 1:  1-6> 7-12: m* M$ Y/ j" U- v

9 r0 P# `% s( F9 JWeight 2:  4-6 > 1-3
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  o! J7 X8 C4 a* @9 R* 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