1 |
2 |
1 |
3 |
2 |
3 |
1 |
4 |
2 |
4 |
3 |
4 |
1 |
5 |
2 |
5 |
3 |
5 |
4 |
5 |
1 |
6 |
1 |
2 |
1 |
3 |
2 |
3 |
1 |
4 |
2 |
4 |
3 |
4 |
1 |
5 |
2 |
5 |
3 |
5 |
4 |
5 |
1 |
6 |
1 |
2 |
15 |
2 |
21 |
2 |
1 |
7 |
2 |
7 |
3 |
7 |
6 |
7 |
1 |
7 |
2 |
7 |
3 |
7 |
4 |
7 |
5 |
7 |
9 |
14 |
1 |
7 |
2 |
7 |
3 |
7 |
4 |
7 |
5 |
7 |
6 |
7 |
1 |
2 |
5 |
7 |
5 |
7 |
A.1022 | B.1024 | C.1026 | D.1028 |
A.n(2n+3) | B.n(n+4) | C.2n(2n+3) | D.2n(n+4) |
S1+S2+S3+…+Sn |
n |
A.1001 | B.991 | C.999 | D.990 |
© 2017-2019 超级试练试题库,All Rights Reserved.