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I'm Michelle Chang, sweet 19 now, from KL,email xiaomi91@hotmail.com. Thanks for visiting my blog~ That's all what I wanna to tell you. ^^

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142857 一個神奇的數字
Written at Monday, March 10, 2008 | back to top

142857 一個神奇的數字

或許你看過這個數字,也或許你忽略了它,

它有什麼奇妙的地方呢?

如果你心算夠快,可以試試看分別用 1 到 6 去乘它,

如果你習慣用計算機,也沒有人會怪你。

答案出來了嗎?發現什麼了嗎?

沒錯!它們好像喔!

142857 X 1 = 142857

142857 X 2 = 285714

142857 X 3 = 428571

142857 X 4 = 571428

142857 X 5 = 714285

142857 X 6 = 857142

它們的排列順序居然一樣,只是位置稍微改變了。

如果用七去乘會有什麼結果呢?

142857 X 7 = 999999

什麼?跟前面的差那麼多!

這真是個奇妙的數字

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