Let [x] denote the greatest integer not exceeding x. For example, [1.1] = 1, [6.9] = 6 and [5] = 5.
If [0.1n pi ] = [0.1 pi (n −1)] where n is a positive integer not exceeding 100, how many different possible values of n are there?
p.s. pi=3.1415...
A maths competition question.
2010-11-05 5:10 am
回答 (1)
2010-11-05 5:55 am
✔ 最佳答案
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2010-11-04 21:56:04 補充：
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原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20101104000051KK01241