Number with ones

The first digit of the number is 1, if we move this digit to the end we get a 3 times higher number, which is the number?

Correct result:

n =  142857

Solution:

n=142857 m=428571 x=3⋅ n=3⋅ 142857=428571 n=142857n=142857 \ \\ m=428571 \ \\ x=3 \cdot \ n=3 \cdot \ 142857=428571 \ \\ n=142857

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Dr Math
prima cifra a unui numar este 1 daca mutam aceasta cifra la sfarsit obtinem un numar de 3 ori mai mare care este numarul?

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