ÌâÄ¿ÄÚÈÝ
£¨06ÄêÈ«¹ú¾í¢òÀí£©£¨£±£²·Ö£©
ijÅú²úÆ·³ÉÏä°ü×°£¬Ã¿Ïä5¼þ£¬Ò»Óû§ÔÚ¹º½ø¸ÃÅú²úÆ·Ç°ÏÈÈ¡³ö3Ï䣬ÔÙ´ÓÿÏäÖÐÈÎÒâ³öÈ¡2¼þ²úÆ·½øÐмìÑé¡£ÉèÈ¡³öµÄµÚÒ»¡¢¶þ¡¢ÈýÏäÖзֱðÓÐ0¼þ¡¢1¼þ¡¢2¼þ¶þµÈÆ·£¬ÆäÓàΪһµÈÆ·¡£
£¨I£©Óñíʾ³é¼ìµÄ6¼þ²úÆ·ÖжþµÈÆ·µÄ¼þÊý£¬ÇóµÄ·Ö²¼Áм°µÄÊýѧÆÚÍû£»
£¨II£©Èô³é¼ìµÄ6¼þ²úÆ·ÖÐÓÐ2¼þ»ò2¼þÒÔÉ϶þµÈÆ·£¬Óû§¾Í¾Ü¾ø¹ºÂòÕâÅú²úÆ·£¬ÇóÕâÅú²úÆ·±»Óû§¾Ü¾øµÄ¸ÅÂÊ¡£
½âÎö£º(1.)
ËùÒԵķֲ¼ÁÐΪ
0 | 1 | 2 | 3 | |
P |
µÄÊýѧÆÚÍûE()=
(2)P()=
Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿