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The height a plant every day increased by $$\frac{1}{2}$$ than that of the preceding day. What is the ratio of the overall height in the fourth day to that of the seventh day?
Give your answer as a fraction.
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· 相关考点
6.2.2 等比数列
6.2.2 等比数列
以上解析由 考满分老师提供。
