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Line 1: − The number ''142857'' has the curious property that, if it is multiplied by any number from 1 to 6, the result is a number with the same digits in the same order (a [[cyclic permutation]]). + − For example, 142857 × 3 = 428571.+ − − This property is closely related to the facts that − − − and that 1/7 expressed as a [[decimal]] is − − − − Investigating the number 142857 can lead a student into an understanding of repeating decimals and [[rational numbers]]. − −
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JEWS DID 9/11
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:1/7 = 142857/999999
:0.142857142857142857142857142857...
[[Category:Mathematics]]