牛刀小試五問 07 - 拼圖

By Regina
at 2013-01-27T20:31
at 2013-01-27T20:31
Table of Contents
══════════════ 牛刀小試五問 07 ═══════════════
第一問
(1) 如右側左圖所示,請移動一枚銅板,使縱橫兩列 ○ │ ○ ○
各有四枚銅板。 ○ ○ ○ │
(2) 如右側右圖所示,請加入兩枚銅板,使這些銅板 ○ │ ○ ○ ○
共可連成十條線,且每條線上有三枚銅板。 ○ │
│ ○ ○
第二問
已知一捲衛生紙中含有兩百四十張衛生紙,每張衛生紙的長度是十四公分。經測
量發現,衛生紙捲的直徑為十一公分、內部的紙筒直徑為四公分。衛生紙纏繞在紙筒
上的直徑是漸次增加的。根據這些資料,你能求出一張衛生紙的平均厚度嗎?
第三問
四座大城市位於邊長二十公里的正方形的四個頂點上, ○──○ ○ ○
為了因應各城市間交通量的增加,政府決定興建公路網將它 ∣ ∣ ╲╱
們串連在一起。右圖即為兩種可行的辦法。為了降低成本, ∣ ∣ ╱╲
公路該如何設計才能使總長度最短呢? ○ ○ ○ ○
第四問
(1) 如何將六隻鉛筆擺在一起,使其中任一枝鉛筆與其他五枝都相互接觸?
(2) 如何將七隻鉛筆擺在一起,使其中任一枝鉛筆與其他六枝都相互接觸?
第五問
在一次越野賽跑中,參賽的四位選手各實行了以下策略:
(1) Allen:前半段距離以16km/hr的速率前進,後半段距離以8km/hr的速率前進
(2) Bryan:前半段時間以16km/hr的速率前進,後半段時間以8km/hr的速率前進
(3) Chris:全程穩定的以12km/hr的速率前進
(4) David:一半的步伐以16km/hr的速率前進,一半的步伐以8km/hr的速率前進
請問這四位參賽者抵達終點的先後順序為何?
───────────────────────────────────────
解答區 (為免降低思考樂趣,以下答案關燈處理)
已解決 一、(1)最上面那枚與交叉點的銅板相疊 (2)詳見推文
已解決 二、0.0245公分 \ˍ/
已解決 三、類似「工」,但上下要內凹,轉個方向就是 / \
已公布 四、http://i.imgur.com/dGSGVIt.jpg
已公布 五、B和C同時抵達,接著是D,A殿後
═══════════════════════════════════════
注意!推文可能有答案!思考之後再往下看!
--
第一問
(1) 如右側左圖所示,請移動一枚銅板,使縱橫兩列 ○ │ ○ ○
各有四枚銅板。 ○ ○ ○ │
(2) 如右側右圖所示,請加入兩枚銅板,使這些銅板 ○ │ ○ ○ ○
共可連成十條線,且每條線上有三枚銅板。 ○ │
│ ○ ○
第二問
已知一捲衛生紙中含有兩百四十張衛生紙,每張衛生紙的長度是十四公分。經測
量發現,衛生紙捲的直徑為十一公分、內部的紙筒直徑為四公分。衛生紙纏繞在紙筒
上的直徑是漸次增加的。根據這些資料,你能求出一張衛生紙的平均厚度嗎?
第三問
四座大城市位於邊長二十公里的正方形的四個頂點上, ○──○ ○ ○
為了因應各城市間交通量的增加,政府決定興建公路網將它 ∣ ∣ ╲╱
們串連在一起。右圖即為兩種可行的辦法。為了降低成本, ∣ ∣ ╱╲
公路該如何設計才能使總長度最短呢? ○ ○ ○ ○
第四問
(1) 如何將六隻鉛筆擺在一起,使其中任一枝鉛筆與其他五枝都相互接觸?
(2) 如何將七隻鉛筆擺在一起,使其中任一枝鉛筆與其他六枝都相互接觸?
第五問
在一次越野賽跑中,參賽的四位選手各實行了以下策略:
(1) Allen:前半段距離以16km/hr的速率前進,後半段距離以8km/hr的速率前進
(2) Bryan:前半段時間以16km/hr的速率前進,後半段時間以8km/hr的速率前進
(3) Chris:全程穩定的以12km/hr的速率前進
(4) David:一半的步伐以16km/hr的速率前進,一半的步伐以8km/hr的速率前進
請問這四位參賽者抵達終點的先後順序為何?
───────────────────────────────────────
解答區 (為免降低思考樂趣,以下答案關燈處理)
已解決 一、(1)最上面那枚與交叉點的銅板相疊 (2)詳見推文
已解決 二、0.0245公分 \ˍ/
已解決 三、類似「工」,但上下要內凹,轉個方向就是 / \
已公布 四、http://i.imgur.com/dGSGVIt.jpg
已公布 五、B和C同時抵達,接著是D,A殿後
═══════════════════════════════════════
注意!推文可能有答案!思考之後再往下看!
--
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