排列組合 2
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combination ~ choose
permutation ~ place
— Me@2012.05.02
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nCr == n choose r
n 選 r
nPr == n place r
n 排 r
— Me@2024-11-15
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2024.11.15 Friday (c) All rights reserved by ACHK
Daily Archives: November 15, 2024
Outlook 2010
<pre style="color: #333333;background-color: #ffffcc;font-size: 12pt;font-family:Calibri"> <span style='mso-spacerun:yes'> </span>... </pre>
— Me@2024-11-15 01:42:34 AM
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2024.11.15 Friday (c) All rights reserved by ACHK
Physics Town 