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#1
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1.¨§ËҨӹǹ¢Í§¨Ó¹Ç¹ 9 ËÅÑ¡·ÕèÊÃéÒ§¨Ò¡ $\left\{\,0,1,2,...,8,9\right\} $ â´ÂáµèÅÐËÅÑ¡äÁè«éӡѹ áÅШӹǹ¹Ñé¹ËÒôéÇ $11111$ ŧµÑÇ
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#2
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ãËé 9 ËÅÑ¡à»ç¹ x8x7x6x5x4x3x2x1x0 , $x_i<10$
$x8(10^8)+x7(10^7)+x6(10^6)+x5(10^5)+x4(10^4)+x3(10^3)+x2(10^2)+x1(10)+x0$ $\equiv x4(10^4)+(x8+x3)10^3+(x7+x2)10^2+(x6+x1)10+(x5+x0)$ ËÒôéÇ 11111 ŧµÑÇáÊ´§ÇèÒ x4=x8+x3=x7+x2=x6+x1=x5+x0 áµè $x_i$ äÁè«éÓ áÊ´§ÇèÒäÁèÁÕ $ x_i $ ·Õèà»ç¹ 0 ãªé stars&bars á¡é 5 à¢Õ¹à»ç¹¼ÅºÇ¡¨Ó¹Ç¹µèÒ§¡Ñ¹(·ÕèäÁèãªè 0)ä´é 4 㹷ӹͧà´ÕÂǡѹ 6 ä´é 4 7 ä´é 6 8 ä´é 6 9 ä´é 8 (¾Ô¨ÒóҶ֧ 9 à¹×èͧ¨Ò¡ $x_4<=9$) ÃÇÁä´é 28 ¨Ó¹Ç¹ |
#3
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ÍéÒ§ÍÔ§:
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¢Í»Åͺ㨵ÑÇàͧ˹è͹ФÃѺ: àÍÒ¹èÒ..¹Õèá¤èʹÒÁà´ÕÂÇ,¶×ÍÇèÒ¿Ò´à¤ÃÒÐËìÅСѹ ʹÒÁ˹éÒµéͧ´Õá¹è[à¤ÃÒÐËìâ´¹¿Ò´ä»à¡ÅÕé§áÅéǹÕè¹Ò] ÊÙéæ |
#4
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#5
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¢Í»Åͺ㨵ÑÇàͧ˹è͹ФÃѺ: àÍÒ¹èÒ..¹Õèá¤èʹÒÁà´ÕÂÇ,¶×ÍÇèÒ¿Ò´à¤ÃÒÐËìÅСѹ ʹÒÁ˹éÒµéͧ´Õá¹è[à¤ÃÒÐËìâ´¹¿Ò´ä»à¡ÅÕé§áÅéǹÕè¹Ò] ÊÙéæ |
#6
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16.7356 S 0 E 18:17:48 14/07/15 |
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