È˽ÌA°æ¸ßÖÐÊýѧѡÐÞ2-3È«²áͬ²½Á·Ï°¼°µ¥Ôª¼ì²âº¬´ð°¸

Ôò1£¬2£¬ÎªÒ»×飬ÇÒ¿ÉÒÔ½»»»Î»Öã¬3£¬0£¬¸÷Ϊ1¸öÊý×Ö£¬ÇÒ0²»ÊÇÊ×λÊý×Ö£¬ÔòÓÐ2?(2?A2)=8¸öÎåλÊý£¬ËùÒÔÈ«²¿ºÏÀíµÄÎåλÊý¹²ÓÐ24¸ö 15¡¢7 ½âÎö£ºÈô(2x+

3

21x)µÄÕ¹¿ªÊ½Öк¬Óг£ÊýÏTr?1?Cn(2x)nn?r3n?r?(1r)Ϊ³£ÊýÏx¼´3n?7r=0£¬µ±n=7£¬r=6ʱ³ÉÁ¢£¬×îСµÄÕýÕûÊýnµÈÓÚ7. 216¡¢36ÖÖ ½âÎö£®´Ó°àί»á5Ãû³ÉÔ±ÖÐÑ¡³ö3Ãû£¬·Ö±ðµ£Èΰ༶ѧϰίԱ¡¢ÎÄÓéίԱÓëÌåÓýίԱ£¬ÆäÖмס¢ÒÒ¶þÈ˲»Äܵ£ÈÎÎÄÓéίԱ£¬ÏÈ´ÓÆäÓà3ÈËÖÐÑ¡³ö1È˵£ÈÎÎÄÓéίԱ£¬ÔÙ

12´Ó4ÈËÖÐÑ¡2È˵£ÈÎѧϰίԱºÍÌåÓýίԱ£¬²»Í¬µÄÑ¡·¨¹²ÓÐC3?A4?3?4?3?36ÖÖ

Èý¡¢½â´ðÌ⣨¹²Áù¸öСÌ⣬Âú·Ö74·Ö£©

17.½â£ºÃ¿¸öµç×趼ÓжÏ·Óëͨ·Á½ÖÖ״̬£¬Í¼ÖдÓÉϵ½ÏµÄÈýÌõÖ§Ïß·£¬·Ö±ð¼ÇΪ֧Ïßa¡¢

2

b¡¢c£¬Ö§Ïßa£¬bÖÐÖÁÉÙÓÐÒ»¸öµç×è¶Ï·Çé¿ö¶¼ÓÐ2¨D1=3ÖÖ£»¡­¡­¡­¡­¡­¡­¡­¡­¡­4·Ö

2

Ö§ÏßcÖÐÖÁÉÙÓÐÒ»¸öµç×è¶Ï·µÄÇé¿öÓÐ2¨D1=7ÖÖ£¬¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­6·Ö ÿÌõÖ§ÏßÖÁÉÙÓÐÒ»¸öµç×è¶Ï·£¬µÆA¾Í²»ÁÁ£¬

Òò´ËµÆA²»ÁÁµÄÇé¿ö¹²ÓÐ3¡Á3¡Á7=63ÖÖÇé¿ö.¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­10·Ö

318. ½â£º¢Ù·Ö²½Íê³É£ºµÚÒ»²½ÔÚ4¸öżÊýÖÐÈ¡3¸ö£¬¿ÉÓÐC4ÖÖÇé¿ö£»

4µÚ¶þ²½ÔÚ5¸öÆæÊýÖÐÈ¡4¸ö£¬¿ÉÓÐC5ÖÖÇé¿ö£» 7µÚÈý²½3¸öżÊý£¬4¸öÆæÊý½øÐÐÅÅÁУ¬¿ÉÓÐA7ÖÖÇé¿ö£¬ 347C5A7?100800¸ö£®¡­¡­¡­3·Ö ËùÒÔ·ûºÏÌâÒâµÄÆßλÊýÓÐC43453C5A5A3?14400¡­¡­6·Ö ¢ÚÉÏÊöÆßλÊýÖУ¬Èý¸öżÊýÅÅÔÚÒ»ÆðµÄÓиö£®C4¢ÛÉÏÊöÆßλÊýÖУ¬3¸öżÊýÅÅÔÚÒ»Æð£¬4¸öÆæÊýÒ²ÅÅÔÚÒ»ÆðµÄÓÐ

345322C4C5C5A3A4A2?5760¸ö£®¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­9·Ö

¢ÜÉÏÊöÆßλÊýÖУ¬Å¼Êý¶¼²»ÏàÁÚ£¬¿ÉÏÈ°Ñ4¸öÆæÊýÅźã¬ÔÙ½«3¸öżÊý·Ö±ð²åÈë5

433C4A5?28800¸ö.¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­12·Ö ¸ö¿Õµµ£¬¹²ÓÐA519.½â£º¢ÅÏÈ¿¼ÂÇ´óÓÚ43251µÄÊý£¬·ÖΪÒÔÏÂÈýÀà

4 µÚÒ»ÀࣺÒÔ5´òÍ·µÄÓУºA4 =24 3 µÚ¶þÀࣺÒÔ45´òÍ·µÄÓУºA3 =6

2 µÚÈýÀࣺÒÔ435´òÍ·µÄÓУºA2 =2¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­2·Ö 5432?A4?A3?A2?88£¨¸ö£© ¹Ê²»´óÓÚ43251µÄÎåλÊýÓУºA5??

¼´43251ÊǵÚ88Ïî.¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­4·Ö ¢ÆÊýÁй²ÓÐA=120Ï96ÏîÒÔºó»¹ÓÐ120-96=24Ï ¼´±È96ÏîËù±íʾµÄÎåλÊý´óµÄÎåλÊýÓÐ24¸ö£¬

ËùÒÔСÓÚÒÔ5´òÍ·µÄÎåλÊýÖÐ×î´óµÄÒ»¸ö¾ÍÊǸÃÊýÁеĵÚ96Ïî.¼´Îª45321.¡­8·Ö

¢ÇÒòΪ1£¬2£¬3£¬4£¬5¸÷ÔÚÍòλÉÏʱ¶¼ÓÐA¸öÎåλÊý£¬ËùÒÔÍòλÉÏÊý×ֵĺÍΪ£º£¨1+2+3+4+5£©¡¤A¡¤10000¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­10·Ö ͬÀíËüÃÇÔÚǧλ¡¢Ê®Î»¡¢¸öλÉÏÒ²¶¼ÓÐA¸öÎåλÊý£¬ËùÒÔÕâ¸öÊýÁи÷ÏîºÍΪ£º £¨1+2+3+4+5£©¡¤A¡¤£¨1+10+100+1000+10000£©

=15¡Á24¡Á11111=3999960¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­12·Ö

20.Ö¤Ã÷:Òò 2n?2?3n?5n?4?4?6n?5n?4?4??5?1?n?5n?4¡­¡­¡­¡­¡­¡­3·Ö

1n?12n?2n?22n?1?4.5n?Cn5?Cn5?????Cn5?Cn5?1?5n?4¡­¡­¡­¡­¡­¡­¡­¡­8·Ö

???1n?12n?2n?22?4.5n?Cn5?Cn5?????Cn5?25n¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­10·Ö

?1n?12n?2n?225?Cn5?????Cn5Äܱ»25Õû³ý,25nÄܱ»25Õû³ý, ÏÔÈ»5n?Cn??ËùÒÔ2n?2?3n?5n?4Äܱ»25Õû³ý.¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­12·Ö ?31?r3?µÄÕ¹¿ªÊ½µÄͨÏîΪTr?1?C521. Éè?4b4b???5b???1?r??45?rC5????b??5??r10?5r65??5?r?1???? ??5b??r,?r?0,1,2,3,4,5?.¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­6·Ö

ÈôËüΪ³£ÊýÏî,Ôò

10?5r?0,?r?2,´úÈëÉÏʽ?T3?27. 6n?33?¼´³£ÊýÏîÊÇ2£¬´Ó¶ø¿ÉµÃ??a???ÖÐn=7£¬¡­¡­¡­¡­¡­¡­¡­10·Ö a??7

?33?ͬÀí??a???ÓɶþÏîÕ¹¿ªÊ½µÄͨÏʽ֪£¬º¬

?a?7µÄÏîÊǵÚ4Ï

Æä¶þÏîʽϵÊýÊÇ35.¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­14·Ö 22. ÓÉÒÑÖªµÃ£º??11?2n?5n,ÓÖn?N,?n?2,¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­2·Ö

2n?2?11?3n?11?2n2n?27232?C5?Pn11?3n?C10?P5?C10?P5?10?9?8?5?4?100 3?2ËùÒÔÊ×Ïîa1?100.¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­4·Ö

117777?15??76?1?77?15?7677?C77?7676?????C77?76?1?15

?76M?14,?M?N??,ËùÒÔ7777?15³ýÒÔ19µÄÓàÊýÊÇ5,¼´m?5¡­¡­¡­6·Ö

m5?rr?5232?r?5??x?µÄÕ¹¿ªÊ½µÄͨÏîTr?1?C5????2x5??2x?5?2r5r?5x3,?232?x? ??5?????1?rr?5?C5???2??r?0,1,2,3,4,5?,

5ÈôËüΪ³£ÊýÏî,Ôòr?5?0,?r?3,´úÈëÉÏʽ?T4??4?d.

3´Ó¶øµÈ²îÊýÁеÄͨÏʽÊÇ£ºan?104?4n£¬¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­10·Ö ÉèÆäÇ°kÏîÖ®ºÍ×î´ó£¬Ôò?¹Ê´ËÊýÁеÄÇ°S25?S26??104?4n?0£¬½âµÃk=25»òk=26£¬

??104?4k?1?0?25ÏîÖ®ºÍÓëÇ°26ÏîÖ®ºÍÏàµÈÇÒ×î´ó£¬

100?104?4?25?25?1300.¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­14·Ö

2

¸ßÖÐÊýѧϵÁÐ2¡ª3µ¥Ôª²âÊÔÌ⣨2.2£©

Ò»¡¢Ñ¡ÔñÌ⣺

1B(6,)£¬Ôò(P(X?2)µÈÓÚ( )

3413803A. B. C. D.

24324324316312ÉèijÅúµç×ÓÊÖ±íÕýÆ·ÂÊΪ£¬´ÎÆ·ÂÊΪ£¬ÏÖ¶Ô¸ÃÅúµç×ÓÊÖ±í½øÐвâÊÔ£¬ÉèµÚX´ÎÊ×´Î

441¡¢ÒÑÖªËæ»ú±äÁ¿X·þ´Ó¶þÏî·Ö²¼£¬X²âµ½ÕýÆ·£¬ÔòP(X?3)µÈÓÚ( )

A. C3()?() B. C3()?() C. ()?() D. ()?() 3¡¢ÉèËæ»ú±äÁ¿XµÄ¸ÅÂÊ·Ö²¼ÁÐΪp(X?k)?a()kA

214234234214142343421423k?1,2,3£¬ÔòaµÄֵΪ£¨ £©

27271717 B C D 193819384¡¢10¸öÇòÖÐÓÐÒ»¸öºìÇò£¬ÓзŻصijéÈ¡£¬Ã¿´ÎÈ¡³öÒ»Çò£¬Ö±µ½µÚn´Î²ÅÈ¡µÃk?k?n?´ÎºìÇòµÄ¸ÅÂÊΪ£¨ £©

?1??9?A£®?????10??10?k?1?1?D£®Cn?1???10?k?12n?k?1??9? B£®?????10??10?n?kkn?kk?1?1??9?C£®Cn?1????10???10?

kn?k

?9????10?

5¡¢¼×¡¢ÒÒÁ½ÃûÀºÇò¶ÓÔ±ÂÖÁ÷ͶÀºÖ±ÖÁijÈËͶÖÐΪֹ£¬Éè¼×ÿ´ÎͶÀºÃüÖеĸÅÂÊΪ0.4£¬ÒÒͶÖеĸÅÂÊΪ0.6£¬¶øÇÒ²»ÊÜÆäËû´ÎͶÀº½á¹ûµÄÓ°Ï죬ÉèͶÀºµÄÂÖÊýΪX£¬Èô¼×ÏÈͶ£¬ÔòP(X?k)µÈÓÚ£¨ £© A.0.6k?1?0.4 B. 0.24k?1?0.76 C. 0.4k?1?0.6 D. 0.76k?1?0.24

6¡¢Ä³Ñ§Éú½âÑ¡ÔñÌâ³ö´íµÄ¸ÅÂÊΪ0.1£¬¸ÃÉú½âÈýµÀÑ¡ÔñÌâÖÁÉÙÓÐÒ»µÀ³ö´íµÄ¸ÅÂÊÊÇ£¨ £© A. 0.1?0.9 B. 0.1?0.1?0.9?0.1?0.9 C. 0.1 D.

232231?0.93

7¡¢Ò»¸ö¿Ú´üÄÚÓдø±êºÅµÄ7¸ö°×Çò£¬3¸öºÚÇò£¬×÷ÓзŻسéÑù£¬Á¬Ãþ2´Î£¬Ã¿´ÎÈÎÒâÃþ³ö1Çò£¬Ôò2´ÎÃþ³öµÄÇòΪһ°×Ò»ºÚµÄ¸ÅÂÊÊÇ£¨ £© A. 2?(73111111)?() B. ()?()?()?() C. 2?()?() D. 10107337737337()?()?()?() 101010108¡¢ÓÃ10¸ö¾ùÔȲÄÁÏ×ö³ÉµÄ¸÷ÃæÉÏ·Ö±ð±êÓÐÊý×Ö1,2,3,4,5,6µÄÕý·½ÌåÍæ¾ß£¬Ã¿´ÎͬʱÅ׳ö£¬