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How do I solve it?

Please give your solutions to the following problem.

Find the least value of n such that \(\frac{10^{n}-1}{69}\) is an integer.

Note by Hari prasad Varadarajan
2 years ago

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What have you tried?

If you don't know where to start, check out Order of an Element. It uses concepts in Euler's Theorem.

Calvin Lin Staff - 2 years ago

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