ÌâÄ¿ÄÚÈÝ
ÏÂͼÊÇÔ¤²âµ½µÄijµØ5ÔÂ1ÈÕÖÁ14ÈյĿÕÆøÖÊÁ¿Ö¸ÊýÇ÷ÊÆͼ£¬¿ÕÆøÖÊÁ¿Ö¸ÊýСÓÚ100±íʾ¿ÕÆøÖÊÁ¿ÓÅÁ¼£¬¿ÕÆøÖÊÁ¿Ö¸Êý´óÓÚ200±íʾ¿ÕÆøÖضÈÎÛȾ£¬Ä³ÈËËæ»úÑ¡Ôñ5ÔÂ1ÈÕÖÁ5ÔÂ13ÈÕÖеÄijһÌìµ½´ï¸ÃÊУ¬²¢Í£Áô2Ìì
£¨1£©Çó´ËÈ˵½´ïµ±ÈÕ¿ÕÆøÖÊÁ¿ÓÅÁ¼µÄ¸ÅÂÊ£»
£¨2£©Éè£ØÊÇ´ËÈËÍ£ÁôÆÚ¼ä¿ÕÆøÖÊÁ¿ÓÅÁ¼µÄÌìÊý£¬Çó£ØµÄ·Ö²¼ÁÐÓëÊýѧÆÚÍû
£¨3£©ÓÉͼÅжϴÓÄÄÌ쿪ʼÁ¬ÐøÈýÌìµÄ¿ÕÆøÖÊÁ¿Ö¸Êý·½²î×î´ó£¿£¨½áÂÛ²»ÒªÇóÖ¤Ã÷£©.
£¨1£©Çó´ËÈ˵½´ïµ±ÈÕ¿ÕÆøÖÊÁ¿ÓÅÁ¼µÄ¸ÅÂÊ£»
£¨2£©Éè£ØÊÇ´ËÈËÍ£ÁôÆÚ¼ä¿ÕÆøÖÊÁ¿ÓÅÁ¼µÄÌìÊý£¬Çó£ØµÄ·Ö²¼ÁÐÓëÊýѧÆÚÍû
£¨3£©ÓÉͼÅжϴÓÄÄÌ쿪ʼÁ¬ÐøÈýÌìµÄ¿ÕÆøÖÊÁ¿Ö¸Êý·½²î×î´ó£¿£¨½áÂÛ²»ÒªÇóÖ¤Ã÷£©.
£¨1£©£»£¨2£©²Î¿¼½âÎö£»£¨3£©5ÔÂ5ÈÕ
ÊÔÌâ·ÖÎö£º£¨1£©ÓÉÓÚ1£13ºÅ¹²ÓÐ6ÌìµÄ¿ÕÆøÖÊÁ¿Ö¸ÊýСÓÚ100£¬ËùÒÔ¼´¿ÉÇó³ö´ËÈ˵½´ïµ±ÈÕ¿ÕÆøÖÊÁ¿ÓÅÁ¼µÄ¸ÅÂÊ.
£¨2£©ÓÉÓÚ£ØÊÇ´ËÈËÍ£ÁôÆÚ¼ä¿ÕÆøÖÊÁ¿ÓÅÁ¼µÄÌìÊý£¬ËùÒÔÓÐÈýÖÖÇé¿ö£º.¸ù¾ÝËù¸øµÄͼ±íÖÐÊý¾Ý·Ö±ðµÃµ½ÈýÖÖÇé¿öµÄ¸ÅÂÊ.Áгö£ØµÄ·Ö²¼ÁУ¬ÔÙ¸ù¾ÝÊýѧÆÚÍûµÄ¹«Ê½£¬¼´¿É¼ÆËã³ö½áÂÛ.
£¨3£©ÓÉÌâÒâ¿ÉµÃÅжϴÓÄÄÌ쿪ʼÁ¬ÐøÈýÌìµÄ¿ÕÆøÖÊÁ¿Ö¸Êý·½²î×î´ó£¬¾ÍÊǹ۲ìÈýÌìµÄ²¨¶¯×î´óµÄÇé¿ö¼´¿É.
Éè±íʾʼþ¡°´ËÈËÓÚ5ÔÂiÈÕµ½´ï¸ÃµØ¡±£¨i=1£¬2£¬£¬13£©
ÒÀ¾ÝÌâÒâP£¨£©=£¬=∅£¨i¡Ùj£©
£¨1£©ÉèB±íʾʼþ¡°´ËÈ˵½´ïµ±ÈÕ¿ÕÆøÖÊÁ¿ÓÅÁ¼¡±
P£¨B£©= 3·Ö
£¨2£©XµÄËùÓпÉÄÜȡֵΪ0£¬1£¬2
P£¨X=0£©= P£¨X=1£©=
P£¨X=2£©= 6·Ö
¡àXµÄ·Ö²¼ÁÐΪ
X | 0 | 1 | 2 |
P |
¡àXµÄÊýѧÆÚÍûΪE£¨X£©= 11·Ö
£¨3£©´Ó5ÔÂ5ÈÕ¿ªÊ¼Á¬ÐøÈýÌìµÄ¿ÕÆøÖÊÁ¿Ö¸Êý·½²î×î´ó. 13·Ö
Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿