2008! |
2009! |
1×2×3×…×2008 |
1×2×3×…×2008×2009 |
1 |
2009 |
1 |
2099 |
1 |
6 |
1 |
3 |
7 |
13 |
2 |
13 |
9 |
13 |
A.27.20% | B.37.36% | C.27.2% | D.37.4% |
A.0 | B.-15 | C.-3 | D.3 |
1 |
1×2 |
1 |
2 |
1 |
2×3 |
1 |
2 |
1 |
3 |
1 |
3×4 |
1 |
3 |
1 |
4 |
1 |
1×2 |
1 |
2×3 |
1 |
3×4 |
1 |
2 |
1 |
2 |
1 |
3 |
1 |
3 |
1 |
4 |
1 |
4 |
3 |
4 |
1 |
n(n+1) |
1 |
1×2 |
1 |
2×3 |
1 |
2009×2010 |
1 |
1×2 |
1 |
2×3 |
1 |
3×4 |
1 |
n(n+1) |
1 |
2×4 |
1 |
4×6 |
1 |
6×8 |
1 |
2008×2010 |
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