In the sequence a1, a2, a3, …, the nnth term and is the distance in the xy-plane between (0, 1) and (n, 0) for each positive int

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问题
In the sequence a1, a2, a3, …, the nnth term and is the distance in the xy-plane between (0, 1) and (n, 0) for each positive integer n. The figure shows the first four terms of the sequence.
Quantity A: a20
Quantity B:

选项 A、Quantity A is greater.
B、Quantity B is greater.
C、The two quantities are equal.
D、The relationship cannot be determined from the information given.

答案C

解析 显然,

故答案为C。
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本试题收录于: GRE QUANTITATIVE题库GRE分类
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