1 |
1×2 |
1 |
2 |
1 |
2×3 |
1 |
2 |
1 |
3 |
1 |
3×4 |
1 |
3 |
1 |
4 |
1 |
8×9 |
1 |
n×(n+1) |
1 |
1×2 |
1 |
2×3 |
1 |
3×4 |
1 |
2007×2008 |
1 |
2008×2009 |
1 |
1×2 |
1 |
2 |
1 |
2×3 |
1 |
2 |
1 |
3 |
1 |
3×4 |
1 |
3 |
1 |
4 |
1 |
2 |
1 |
2 |
1 |
3 |
1 |
2008 |
1 |
2009 |
1 |
8×9 |
1 |
8 |
1 |
9 |
1 |
n×(n+1) |
1 |
n |
1 |
n+1 |
1 |
1×2 |
1 |
2×3 |
1 |
3×4 |
1 |
2007×2008 |
1 |
2008×2009 |
1 |
2 |
1 |
2 |
1 |
3 |
1 |
2008 |
1 |
2009 |
1 |
2009 |
2008 |
2009 |
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1 |
1×3 |
1 |
2 |
1 |
3 |
1 |
3×5 |
1 |
2 |
1 |
3 |
1 |
5 |
1 |
5×7 |
1 |
2 |
1 |
5 |
1 |
7 |
1 |
1×3 |
1 |
3×5 |
1 |
5×7 |
1 |
(2n-1)×(2n+1) |
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1 |
1×3 |
1 |
2 |
1 |
3 |
1 |
3×5 |
1 |
2 |
1 |
3 |
1 |
5 |
1 |
5×7 |
1 |
2 |
1 |
5 |
1 |
7 |
1 |
1×3 |
1 |
3×5 |
1 |
5×7 |
3 |
7 |
3 |
7 |
1 |
1×3 |
1 |
3×5 |
1 |
5×7 |
1 |
(2n-1)(2n+1) |
n |
2n+1 |
n |
2n+1 |
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1×4 |
1 |
3 |
1 |
4 |
1 |
4×7 |
1 |
3 |
1 |
4 |
1 |
7 |
1 |
7×10 |
1 |
3 |
1 |
7 |
1 |
10 |
1 |
n(n+3) |
1 |
3 |
1 |
n |
1 |
n+3 |
1 |
1×4 |
1 |
4×7 |
1 |
7×10 |
1 |
2005×2008 |
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1×2 |
1 |
1 |
1 |
2 |
1 |
2×3 |
1 |
2 |
1 |
3 |
1 |
3×4 |
1 |
3 |
1 |
4 |
1 |
4×5 |
1 |
4 |
1 |
5 |
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+2011)(b+2011) |
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科目:初中數學 來源: 題型:
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1×3 |
1 |
2 |
1 |
3 |
1 |
3×3 |
1 |
2 |
1 |
3 |
1 |
5 |
1 |
5×7 |
1 |
2 |
1 |
5 |
1 |
7 |
1 |
1×3 |
1 |
3×5 |
1 |
5×7 |
1 |
19×21 |
10 |
21 |
10 |
21 |
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