3 |
2 |
3 |
2 |
4 |
3 |
4 |
3 |
5 |
4 |
5 |
4 |
2005 |
2004 |
2005 |
2004 |
(1+3)×2 |
2 |
(1+5)×3 |
2 |
(1+7)×3 |
2 |
1 |
1×2 |
1 |
1 |
1 |
2 |
1 |
2×3 |
1 |
2 |
1 |
3 |
1 |
12×13 |
1 |
12 |
1 |
13 |
1 |
n×(n+1) |
1 |
n |
1 |
n+1 |
1 |
n×(n+1) |
1 |
n |
1 |
n+1 |
1 |
ab |
1 |
(a+1)(b+1) |
1 |
(a+2)(b+2) |
1 |
(a+2002)(b+2002) |
x2 |
1+x2 |
4 |
5 |
4 |
5 |
1 |
2 |
1 |
5 |
1 |
5 |
1 |
2 |
1 |
3 |
1 |
x |
1 |
2010 |
1 |
2009 |
1 |
2008 |
1 |
2007 |
1 |
2006 |
1 |
3 |
1 |
2 |