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Question

What can be the maximum number of digits in the repeating block of digits in the decimal expansion of 117? Perform the division to check your answer.

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Solution

When 1 is divided by 17, we get,
117=0.¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯0588235294117647
So, the number of digit in the repeating block of digit in the decimal expansion of 117=16

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