AMC 8 2013 Problem 9

AMC8 2013 年第 9

数列与规律★★☆☆☆
The Incredible Hulk can double the distance it jumps with each succeeding jump. If its first jump is 1 meter, the second jump is 2 meters, the third jump is 4 meters, and so on, then on which jump will it first be able to jump more than 1 kilometer?
绿巨人浩克每次跳的长度都是前面一次的两倍。若它第一次跳了 1 米,第二次跳了 2 米,第三次跳了 4 米,以此类推,那么第几次跳的长度超过 1 公里?
  1. A.9-th
  2. B.10-th
  3. C.11-th
  4. D.12-th
  5. E.13-th

正确答案 · Correct Answer

C

解析 · Solution

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