|
|
???????????????
????????1
1?4?????2???????????????????????????????????????
??????? ?A?6A3
3
B?3A3
3
C?2A3
3
D?A2
2
A4A4
14
2????1?2?3?4?5?6???????????1?2?3?4?5?6????????????????????????????? ? ?A?15? B.90? C?135?D?150? 3??6?????3???????4?????????????????????? ? A?168 B?45 C?60D?111
4????????????????????????????7????????????????3?
?????????4?????????????? ? ? A?210? B?126?C?70?D?35? 5??????9??????,??,?,?????????3???,??????????,??????
???? ? A?1680?B?560? C?280? D?140?
6????????10???????????????????????????? ?
87
A?A10?A10
B?C10-C10 D?C8A8
108
87
C?108?107
7?????A={1?2?3?4}???B={?1??2}????f: A?B????B??????A????f???????????f?A?16? B?14? C?12?8?????12?????3?????????? ????????? ? ?
? ?
D?8?
A?208 B?204 C?200 D?196
9??0?1?2?3???????????????????5??????????? ? A?24?B?12?C?6?D?4?
10???200?????3??????????5???????2???????? ?
A?C3C198?
5
4
2
3
B?(C3C197?C3C197)?
5
1
4
2332
C?(C200-C197)? D?(C200?C3C197)?
11??10???????????1?2?3????????????????????????????
????????? ?
32A?C6B?C6
32
CC?C9 D? 912.
??4???????????3 ??????????????????????????????
????????????????????????????? ?
A?43?(A3)3 B?43?(C3)3 C?A4?(C3)3 D?A4?(A3)3
2
2
3
2
3
2
13????1?2?3?4?5????????????1?2????????_____??
14???????????A?B???????????. 15??????????????????????,?????,??????
??,???????,??????????????????????,????????,??????,???,???????____ ???.
16??????????????????????????2?2??4?
????????????? 5????????????????200?????????????
????????????????
17.??????????????????????????????????????????3??????????????????????????????72????????????????
18.??????????5???????a?b?c?d???????????????????????????????????????
19?7????????????????????????????????
(1)7???????????3????????
(2)7????????????????????????????????
(3)??6???????????????????????????
20?4????2?????????????????????????????????(1)?????????
(2)???????????????? (3)???????????????
???1?D 2?C3?D4?C5?C6?C7?A8?B9?B10?B
11?D12?D
3323325??C8C6C3/C2?280 8??C12?4?3C4?204
9??????? 13??A5
5
112
C3C2A2?12.
421212123?A4A2?72. 14??(C2?C2)(C2?C2)?1?(C3?C3?C3)?17.
2
2
?C4?2?1?15.
15??2016. 16??C4?????
2
17???????????? x ?, x ??????C5?? ?C2x?200
x2?x?40?0,x?N ??x?7.
218???????????n????????????72-23=66??Cn
?66????n=12.??????14???
???19??180 20???1?A4A3
4
3
311163
=140? A2A2?8; ?3?C7C6?C3?144; ?2?A2
21(1) ??? ???????????????????????
24
?) ????????A2???? ?) ??????????A4???? ? ?? ??? ???????????????????????
4 A2A24?48????
42
?) ???????????A4? ?) ????????A2?
??? ???????????????????????????????????????????????
42?) ???????A4?????) ???????A2?
??? ???????????????????????????????????????????A???-?A.
62
?) 6??????A6?????) ??????????A4 ??????A44?
?) ????????????
14
A4(????????) A4 2???????? A12(????)
62
?) ???A6-?A4114+2A4AAA4244?
??? ????????????????????????????????????????????1???????
5
????5????????A5????????????????????????????1/5????1??
??????
15225
A5A2?A5?? 55
(2) ?????1??????5??????
3
??? ????????????. ??4?????2????????????????3????AA23?42
??????A2???. ? ??
32AA2A342?144????
1
??2 ?????,????. ???????A34
(3) ? ??????????A4
1424
??????. ? ??AA2AAA3???. 2424
2
(????). A3
3
22???1??C?A?CUB???????C??C8=56?? ?2??C?
A?B???????C??C34?4??
112
?????????C??C24?C8?C4?C8=160??
?3??C?A?C?a
???1???2???3??????????C???56+4+160=220??
???????????????????????????????????????????????
??????????????????????????????????????????????????????????????????????????????????? ????????????
??????????????????????????????????????????????
?????????????????????
??1 ????????????????????????????? ??
A?120?B?96? C?78? D?72?
????????????????????1?????????????????????2??????????????????????????????????C?
???????????????????????????????????
?? 2? 4??????????1?2?3?4???????????????????
???
?????????????????1?????????2?????4????3?????2???????2???????????2??3????????3???????????????? ????????????
????????????????????????????????????????????? ??3? ?0?2?3?4?5?????????????????????????? ?? A? 24? B?30? C?40? D?60?
[??]???????????????????????0???????0??????????????????0?????0?????????1?0????????2?0???????????????????????=30???B?
??4?????8?????????????????????????????????????????????????????????????????????????
??????????1??????6????????????????????????????????????????????????????????????????????5????4?????3???????????????? ?????????
?????????????????????????????????????????????????????
??5?7???????? ???????????????????????
??? ???????????????????????5???????????????????????????????
???????????????????????????????????????????????????
??6?7???????????????????????????
??? ?????????????????4??5????????????????????????????????? ???????
????????????????????????????????????????????
????3???????????????????????????????0??????????3?5?????????????????????? ???????????
???????????????????????????????????????????????????????
??7? 6??????????????---?---??????????????
??? ????????????????????????????????????????????????
?????? ???
??????????????????????????????????? ??8???a+b+c+d=12?????????
???????????12????????????????????11????????3????????4?????????4?????????????a?b?c?d??????????????????????
????a+b+c+d=12????????????,??????????????????????? ?????????
?????????????????????????????????????????????
????????????????????????(???)
??????????
???????????
????????????????????????????????????????????????100??????90???
???(??? ?40?)
??????????10??????4???40???????????????????????????
1???????????????
A????????? B????????? C???????D??????????? ???A ??????????????????
2?????3????2????????2????????????? (1)??1??????2??? (2)???1???????1??? (3)???1???????? (4)???1????????
????????????????
A?1 B?2 C?3 D?4
???B ?????????????(1)?(4)?????B. 3?????????????????????
131107133110
A?C310() B?C7( C?C10( D?3() 2222
13173110
???C ??????????????????P?C310((1?)?C10().??C. 222
4????????10????8?????10????7???????????????????????
141233A. B. C. 252545
84
???A ??????????A???????B??P(A)??P(B)
105
74714??????P(AB)??. 1051025
5????????????A????5??????????B????5????????1???????A?B??????
1125A. B. 3236
21422
???C ?????P(A)P(B)?P(A?B)?P(A)?1?P(B)?.
63633
6???????????????????????????????0.6???????????0.92??????????????
A?0.4 B?0.6 C?0.8 D?0.9
???C ??????????????A???????????B???P(A)?0.6?P(AB?AB?AB)?0.92??P(B)?0.8.
7?????????5????3????????????????????3????????2????????
2334A. B. 7879
???A ???????2????????2?1??3??
2C1C3C2
?P?????A.
C8C87
8???????????????????????????????????{an}
???1??n?????
???an????Sn???{an}??n?????S7?3????
?1??n??????
1225222155251252225
A?C57( B?C7() C?C7(() D?C7(( 33333333
21
???B ????????S7?3?
33
?????????2????5????????????????????????P
2215
?C27)(). 33
21
9???????????????????????????3???2????
32
???????
1211A. B. 4568
???C ??????????3???2????A???????3??2
22121211
????B??P?P(A)P(B)?C2C(()C. 3()()333226
10??????????4?????3???????????????0.4???????????
A?0.18 B?0.28 C?0.37 D?0.48
???A ????????4????????????????????4???
34
??????????????3??4?????P?P4(3)?P4(4)?C340.40.6?C40.44?0.18.
???(???? ?60?)
??????????4??????4???16?????????????
11????????0.9??????????0.6?????????????????________??????????________?
???0.01 0.16 ????????????????P?(1?0.9)(1?0.9)?0.01????????????????P?(1?0.6)(1?0.6)?0.16.
12???????36????????????????????????????
1
????????????????????________??
2
C2C2136?x???6 ??????x????36?x?????????x?15?x?
C36C362
21.
111
13??????????????????????????
234
?????????????????1?????????________?
11
??? ????????????A?????????B?????
24
111
????C??P(A)??P(B)??P(C)?.
234
11
??????1?????????P?P(ABC)?P(ABC)?P(ABC)?
24
1
14??????a?b?c?????????????
2
?????????????????________?
________.
131111
??? ????????a?c???b?????P??882228
11111113
?a???b?c?????????P??.
22222228
??????????5????44?????????????????????? 15?(???8?)??????????????10??9??8??7???????0.21?0.23?0.25?0.28??????????????
(1)??10??7?????
(2)??7?????
??(1)???10????A????7????B??????????A?B?????????A?B????????10??7?????A?B??P(A
?B)?P(A)?P(B)?0.21?0.28?0.49.
????10??7?????0.49.
(2)???7????C????C???7??8??9??10?? ?P(C)?0.21?0.23?0.25?0.28?0.97? ??P(C)?1?P(C)?1?0.97?0.03.
????7?????0.03.
16.(???8?)????????1???????????????????0.8????
(1)???????????
(2)????1?????????
(3)???1?????????
??(1)?????????1???????????A??????????1???????????B?????A?B??????
P(AB)?P(A)P(B)?0.80.8?0.64. ?????????????0.64. (2)????????1???????
??????????(AB)????????????(AB)??AB?AB????P?P(AB?AB)?P(AB)?P(AB)?P(A)P(B)?P(A)P(B)?0.32.
(3)???1????????????????????? ?P?1?P(AB)?1?P(A)P(B)?0.96.
17?(???8?)??????????????????????????????????????????????????????????????????????
1
???????????????
2
(1)???1?????????
(2)??1???????
(3)??2???????
???????????????????
????????????????
??????????12???????5???60?????????????????????
??????? 1?????????????4????????3????????????????? ??????????????????
A?24?
B?18?
C?12?
D?6?
? ?
2??????????4???????7?????????????????????????1?
?????????????????2????????????????????????????????
A?22??????
A?6?
B?56
B?8?
C?210
C?10?
? ? D?420 ? ? D?16?
3??????????????????????????5?????????????????
4???????????????????,?????????????????????????
??????????????????????????????????? ? ?A?240
A?15
B?120? ? B?30
C?45
D?60
C?60
D?320
5???6?????????????????????????????????????
6? ????????01?36?36?????7????????2?.????01?10??3??????
?11?20??2???????21?30??1????31?36??1??????????????????????????
A?3360?
B? 6720?
C?4320?
? ? D?8640?
7? ???????????????0?2?3?4?5?6??6???9??????????????
?????????????? A? 12
B? 72 C?60
D?40 ? ?
8? ?????????15??????????12??????????9?????????22??????
???????????????????????????
A?5 B?6 C?7D?8
9? ???????ABCD??E?F?G?H??????O????????A?E?B?F?C?G?D?
H?O??????????????????????????????????????? ? A?6? B? 7?C?8? D?9?
10????2????3????5????10?????????????4?????????
2???????????5???????3???????1????????????m???m??? ? A?9 B?8 C?7D?6 11????A1?A2??A1?A2=A???(A1,A2)???A??????????????A1=A2
??(A1,A2)?(A2,A1)?????????????A={a1,a2,a3}???????? ? ?
A?27 B?26 C?9 D?8
12.??????????????????.??k??????????????????????
1?2???k???????1??????????0?? aij??
j?????.?1,?i??????
j?????.?0,?i???????
??i=1?2???k??j=1?2???k???1?2??????????????? ?
A?a11?a12???a1k?a21?a22???a2k B?a11?a21???a1k?a12?a22???ak2 C?a11a12?a21a22???ak1ak2 D?a11a21?a12a22???a1ka2k
??????????4??????4???16??
13?????????4??????ABCD???????????????????????????????????????????????? ??
14????????????????????????????????????????524?
746?????????????????????????_____??
15??????????5??????????????????1??5???????????
???????????????????????????????????????????????????5?????????? ????????????? 16?????????????i(i?1,2,3,4)????????{85,87,88,90,93}?
???f(1)?f(2)?f(3)?f(4)???????????????????? ??
????????74?? 17??12??????????A?B?C???????D?E????????????? 18??12?????????????????????????????????????????
????????????10???257?1459??????????????????
19. ?12?? ?f???A={a,b,c,d}?B={0,1,2}?????f(a)?f(b)?f(c)?f(d)?4,????
??????f??????
20. ?12????x1,x2,x3,x4??????????
xi
?i,j,k=1,2,3,4, ?i,j,k??????
xj?xk
????????????????an???????????S? ?1????????????? ?2????S?6.
21??12??A?{a1,a2,a3,a4,a5}
??????????A?A??????????????A?A??????
??????????A?A???????????????22??14???1?2?3???20?20??????????3??? ?1? ?3???????????????????????????????????????
??????????????????; ?2? ?3?????3???????????????????????????10??????
??????????????? ?3? ???????????????????????????????????????
????
?????
1A 2C 3C 4D 5C 6D 7C 8C 9C 10C 11A 12D
4412222
4??D C5? A4?C35C3C3A2?C5A2?320
42C6C4
5???45? 2
A2
????? 13??????
14?????*0*?*1*?*2*?*3*?*4*?*5*?*6*?*7*??????
2222222
? A9?A8?A7?A6?A5?A2?A?A432?240233
15???A3A3?A13A3?54;
416???C3 5?C5?15.
?????
17???A?B?C???????????A5
5?8?????????????
A
44
3
???4????D?E?????6
2
A
44
3
?A2A5??
2
AA
5
53
-?6
AA
?2
A
35
=11520???12??
18??? ????????????????????????????????????????
???????????????????????????????????????????????????????????????????????????????9???????????1?2?...?8?9??????????9?8?...?1???????(1+9)*9/2=45???12?? 19???4=2+2+0+0=2+1+1+0=1+1+1+1.????????C4
3120????1???????C4?6?? C3?12??
2
?A2?12?? 4?1?19??
(2)S=(
?x1?x4x3?x2?x3?x4x1?x2x?x4x1?x3
??)?(2?)?????x1?x2x3?x4x1?x3x2?x4?x3?x2x1?x4?
5
?2?2?2?6.?12??
2
4
21?????5? ?4?? ???A5?12?? 5? ?8?? ???C5?A5?
22???1??A=?1,3,5,???,19?,?B??2,4,???,20???A?B??????????????????
22
???????????????????????2(C10?C10)?180??????????3?
1
3
??????4?????2??4??2??
1
??????10???? 2
1
??????2????????16???4?? 4
A0??3,6,???,18?,A1??1,4,??????,19??A2??2,5,???,20???????????3?????
??????1???????3????????????
33111
C6?2C7?C6C7C7?384??
1,3,5,???,19?,?B??2,4,???,20??????3??????????? ??A=?
312
??3???????10??6???????????5706=564???9C10?C10C10?570??
??
?3?????????3????19????????????????????????????
3
???????13????3????????16????????C16??????
???20????????1?2???20?????????????????????????
3
?14?? C16?560??
??????????:??????????
?????http://www.850500.com/news/6522.html
?????,??! |
|
发表于 2019-9-13 23:46:11