排列組合 - 拼圖
By Christine
at 2017-04-27T15:02
at 2017-04-27T15:02
Table of Contents
有六個城市彼此之間都能造路。
也就是有(6,2)=15條路線可造路或不造。
請問有幾種造路法使得六個城市能夠連通(任意城市都能夠互通)。
ex: 若題目改為三個城市,答案為四種。
A -- B
\
C
A -- B
/
C
A B
\ /
C
A -- B
\ /
C
--
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拼圖
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By Bethany
at 2017-04-30T23:50
at 2017-04-30T23:50
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at 2017-05-03T03:02
at 2017-05-03T03:02
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at 2017-05-07T06:37
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at 2017-05-07T15:57
at 2017-05-07T15:57
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at 2017-05-08T12:23
at 2017-05-08T12:23
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at 2017-05-09T16:56
at 2017-05-09T16:56
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