1 |
3 |
3 |
8 |
5 |
15 |
7 |
24 |
9 |
35 |
1 |
3 |
2×1-1 |
(1+1)2-1 |
3 |
8 |
2×2-1 |
(2+1)2-1 |
5 |
15 |
2×3-1 |
(3+1)2-1 |
2×7-1 |
(7+1)2-1 |
13 |
63 |
2n-1 |
(n+1)2-1 |
13 |
63 |
2n-1 |
(n+1)2-1 |
32-1 |
2 |
52-1 |
2 |
72-1 |
2 |
1 |
1×2 |
1 |
2 |
1 |
2×3 |
1 |
2 |
1 |
3 |
1 |
3×4 |
1 |
3 |
1 |
4 |
1 |
4×5 |
1 |
4 |
1 |
5 |
1 |
1×2 |
1 |
2×3 |
1 |
3×4 |
1 |
4×5 |
1 |
2009×2010 |
1 |
10 |
1 |
12 |
1 |
12 |
1 |
15 |
© 2017-2019 超级试练试题库,All Rights Reserved.