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      /  °Ý3ÃD,±Æ¦C²Õ¦X
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kapa
Just popping in



µù¥U¤é: 2010-05-18
µoªí¼Æ: 6


 °Ý3ÃD,±Æ¦C²Õ¦X

°Ý:3ÃD±Æ¦C²Õ¦X°ÝÃD(¦]¬°§Úªºµª®×³£©M¥¦¤£¤@¼Ë)½Ð¨D°ª¤â«üÂI°g¬z.
1.±ý±N8¦ìÂà¾Ç¥Í¤Àµo¨ì¥Ò,¤A,¤þ,¤B¥|¯Z,¦ý¨C¯Z¦Ü¤Ö1¤H¦Ü¦h3¤H,«h¦@¦³´XºØ¤£¦Pªº¤Àªk?Ans:29400
2.±N¡¨¤H¥Í¦p¹Ú¹Ú¦p¤H¥Í¡¨¤K­Ó¦r¥þ¨ú±Æ¦¨¤@¦C,¨ä¤¤¡¨¤H¡¨»P¡¨¥Í¡¨¨â¦r¤£¬Û¾F¤§±Æªk¦³´XºØ?Ans:660
3.A,B,C,D,E¤­¹ï¤Ò°ü(¤Q¤H)³ò¦¨¤@¶ê®à¦Ó§¤(®y¦ìµL½s¸¹),«ê¦³¤T¹ï¤Ò°ü¬Û¾Fªº±¡§Î¦³´XºØ?Ans:26880
**¤£¦n·N«ä,¥ýpo§Úªºµª®×,¸ÑÃD¹Lµ{µ¥¤@¤U¦Apo
1.A: 29400 (§ó¥¿) 2.A:360 3.A:26880(§ó¥¿)

 2010-05-20 16:52­Ó¤H¸ê®Æ
kapa
Just popping in



µù¥U¤é: 2010-05-18
µoªí¼Æ: 6


 Re: °Ý3ÃD,±Æ¦C²Õ¦X

1.±ý±N8¦ìÂà¾Ç¥Í¤Àµo¨ì¥Ò,¤A,¤þ,¤B¥|¯Z,¦ý¨C¯Z¦Ü¤Ö1¤H¦Ü¦h3¤H,«h¦@¦³´XºØ¤£¦Pªº¤Àªk?Ans:29400
Sol:1. ¨C¯Z¦Ü¤Ö1¤H¦Ü¦h3¤H,¥i¥H¦p¤U¤Àµo: (¥Ò,¤A,¤þ,¤B)
(1) (3,3,1,1):[C(8,3)xC(5,3)xC(2,1)xC(1,1)/2!2!]x4!=6720 (§ó¥¿)
(2) (3,2,2,1): [C(8,3)xC(5,2)xC(3,2)xC(1,1)/2!]x4!=20160
(3) (2,2,2,2): [C(8,2)xC(6,2)xC(4,2)xC(2,2)/4!]x4!=2520
©Ò¥H,¦@¦³6720+20160+2520=29400 (§ó¥¿)
Sol:2. ¥ý±Æ¡¨¤H¤H¦p¹Ú¹Ú¦p¡¨
(1)[¤H¤H]¬Û¾F„»¤H¤H¦p0¹Ú0¹Ú0¦p0 ¦A´¡¤J¡¨¥Í,¥Í¡¨©ó0³B
(5!/2!2!)xP(4,2)/2!=30x6=180
(2)[¤H¤H]¤£¬Û¾F„»¤H¦p¤H¹Ú0¹Ú0¦p0 ¦A´¡¤J¡¨¥Í,¥Í¡¨©ó0³B
(4!/2!2!)xP(5,2)/2!xP(3,2)/2!=6x10x3=180
©Ò¨D,180+180=360 (³o¬O§Úºâªºµª®×!)
Sol:3.¯u¤£¦n·N«ä!¦]¬°§Ú¤£·|po¹Ï,¸ÑÃD¹Lµ{»Ý­nµe¹Ï¸ÑÄÀ.©Ò¥H,¸ÑÃD¹Lµ{---²¤

 2010-05-20 17:12­Ó¤H¸ê®Æ
myfund168
Just can't stay away



µù¥U¤é: 2009-05-18
µoªí¼Æ: 148


 Re: °Ý3ÃD,±Æ¦C²Õ¦X

½Ð°Ý§AªºÃD¥Ø±q­þ¸Ì¨Óªº¡H
¬°¤°»ò¨CÃD³£³o»òÃø¡I

 2010-05-21 18:38­Ó¤H¸ê®Æ
myfund168
Just can't stay away



µù¥U¤é: 2009-05-18
µoªí¼Æ: 148


 Re: °Ý3ÃD,±Æ¦C²Õ¦X

²Ä¤@ÃD¡G§Ú¤ñ¸û³ßÅw¼g¦¨
(1) (3,3,1,1):[C(8,3)xC(5,3)xC(2,1)xC(1,1)]x[C(4,2)]=6720
(2) (3,2,2,1): [C(8,3)xC(5,2)xC(3,2)xC(1,1)]x[C(4,1)xC(3,1)]=20160
(3) (2,2,2,2): [C(8,2)xC(6,2)xC(4,2)xC(2,2)]x1=2520
©Ò¥H,¦@¦³6720+20160+2520=29400

²Ä¤GÃD¡G¡¨¤H¡¨»P¡¨¥Í¡¨¨â¦r¤£¬Û¾F
¬O"¤H¥Í"¤£¬Û¾F ?
ÁÙ¬O§Aºâªº "¤H¤H" ¤Î "¥Í¥Í"¤£¬Û¾F ?

 2010-05-22 21:29­Ó¤H¸ê®Æ


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