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> 有一列数：a 1、a 2、a 3、…a n，从第二个数开始，每一个数都等于1与它前面那个数的倒数的差，若a 1=2，则a 2007为 [ ] A.2007 B.2 C. D.-1

问题：

发布时间：2024-09-12

有一列数：a ₁、a ₂、a ₃、…a _n，从第二个数开始，每一个数都等于1与它前面那个数的倒数的差，若a ₁=2，则a ₂₀₀₇为
[ ]
A.2007
B.2
C.
D.-1

参考答案：

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