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If you count from 1 to 100, how many 7s will you pass on the way? A、10B、11C、19
If you count from 1 to 100, how many 7s will you pass on the way? A、10B、11C、19
游客
2024-08-14
7
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问题
If you count from 1 to 100, how many 7s will you pass on the way?
选项
A、10
B、11
C、19
D、20
答案
D
解析
题目问从1数到100,你会遇到多少个7?根据题目要求可知,从1数到100的过程中会遇到以下数字:7,17,27,37 ,47,57 ,67,70,71,72 ,73,74,75,76,77,78,79 ,87,97由此可知。一共有20个“7”。
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