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發表 娜可兒 於 星期五 二月 09, 2007 1:42 pm

如jackhoung所言共16解沒錯,只是並不是n=1,2,4,7,8,11,13,14,16,17,19,22,23,26,28,29
還要乘上8倍
意即N=8,16,32,56............232

發表 piny 於 星期五 二月 09, 2007 1:32 am

#ed_op#DIV#ed_cl#120=2^3*3*5#ed_op#/DIV#ed_cl##ed_op#DIV#ed_cl# #ed_op#/DIV#ed_cl##ed_op#DIV#ed_cl#又(n,120)=8,#ed_op#/DIV#ed_cl##ed_op#DIV#ed_cl#故n=2^3*7^a*11^b*13^c*17^d*19^e*23^f*29^g#ed_op#/DIV#ed_cl##ed_op#DIV#ed_cl# #ed_op#/DIV#ed_cl##ed_op#DIV#ed_cl#符合n不大於240之解共八解#ed_op#/DIV#ed_cl##ed_op#DIV#ed_cl#8,#ed_op#/DIV#ed_cl##ed_op#DIV#ed_cl#8*7,#ed_op#/DIV#ed_cl##ed_op#DIV#ed_cl#8*11,#ed_op#/DIV#ed_cl##ed_op#DIV#ed_cl#8*13,#ed_op#/DIV#ed_cl##ed_op#DIV#ed_cl#8*17,#ed_op#/DIV#ed_cl##ed_op#DIV#ed_cl#8*19,#ed_op#/DIV#ed_cl##ed_op#DIV#ed_cl#8*23,#ed_op#/DIV#ed_cl##ed_op#DIV#ed_cl#8*29#ed_op#/DIV#ed_cl#

發表 jackhoung 於 星期一 五月 08, 2006 10:00 pm

#ed_op#DIV#ed_cl#240/8=30#ed_op#/DIV#ed_cl##ed_op#DIV#ed_cl#30/3+30/5-30/15=16#ed_op#/DIV#ed_cl##ed_op#DIV#ed_cl#n=1,2,4,7,8,11,13,14,16,17,19,22,23,26,28,29#ed_op#/DIV#ed_cl#

[問題]n的數目

發表 tangpakchiu 於 星期一 五月 08, 2006 8:51 pm

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mso-bidi-font-size: 12.0pt; mso-fareast-font-family: 細明體; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-TW; mso-bidi-language: AR-SA"#ed_cl#n#ed_op#/SPAN#ed_cl##ed_op#/I#ed_cl##ed_op#SPAN style="FONT-SIZE: 18pt; FONT-FAMILY: 細明體; mso-bidi-font-size: 12.0pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-TW; mso-bidi-language: AR-SA; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'"#ed_cl#為不大於#ed_op#/SPAN#ed_cl##ed_op#SPAN lang=EN-US style="FONT-SIZE: 18pt; FONT-FAMILY: 'Times New Roman'; mso-bidi-font-size: 12.0pt; mso-fareast-font-family: 細明體; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-TW; mso-bidi-language: AR-SA"#ed_cl#240#ed_op#/SPAN#ed_cl##ed_op#SPAN style="FONT-SIZE: 18pt; FONT-FAMILY: 細明體; mso-bidi-font-size: 12.0pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-TW; mso-bidi-language: AR-SA; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'"#ed_cl#的自然數#ed_op#/SPAN#ed_cl##ed_op#SPAN lang=EN-US style="FONT-SIZE: 18pt; FONT-FAMILY: 'Times New Roman'; mso-bidi-font-size: 12.0pt; mso-fareast-font-family: 細明體; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-TW; mso-bidi-language: AR-SA"#ed_cl#,#ed_op#/SPAN#ed_cl##ed_op#SPAN style="FONT-SIZE: 18pt; FONT-FAMILY: 細明體; mso-bidi-font-size: 12.0pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-TW; mso-bidi-language: AR-SA; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'"#ed_cl#若#ed_op#/SPAN#ed_cl##ed_op#SPAN lang=EN-US style="FONT-SIZE: 18pt; FONT-FAMILY: 'Times New Roman'; mso-bidi-font-size: 12.0pt; mso-fareast-font-family: 細明體; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-TW; mso-bidi-language: AR-SA"#ed_cl#(#ed_op#I style="mso-bidi-font-style: normal"#ed_cl#n#ed_op#/I#ed_cl#,120)=8 ,#ed_op#/SPAN#ed_cl##ed_op#SPAN style="FONT-SIZE: 18pt; FONT-FAMILY: 細明體; mso-bidi-font-size: 12.0pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-TW; mso-bidi-language: AR-SA; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'"#ed_cl#則此種#ed_op#/SPAN#ed_cl##ed_op#I style="mso-bidi-font-style: normal"#ed_cl##ed_op#SPAN lang=EN-US style="FONT-SIZE: 18pt; FONT-FAMILY: 'Times New Roman'; mso-bidi-font-size: 12.0pt; mso-fareast-font-family: 細明體; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-TW; mso-bidi-language: AR-SA"#ed_cl#n#ed_op#/SPAN#ed_cl##ed_op#/I#ed_cl##ed_op#SPAN style="FONT-SIZE: 18pt; FONT-FAMILY: 細明體; mso-bidi-font-size: 12.0pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-TW; mso-bidi-language: AR-SA; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'"#ed_cl#共有#ed_op#/SPAN#ed_cl##ed_op#SPAN lang=EN-US style="FONT-SIZE: 18pt; 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