hw27 - For what natural numbers a does the decimal...

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Modern Algebra 1 Homework 13.1 Spring 2010 Due April 30 Exercise 1. Find (with proof!) the period and repeating part of the decimal expansion of 1/239. Exercise 2.
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Unformatted text preview: For what natural numbers a does the decimal expansion of 1 /a have period exactly 4? [ Hint: 10 4-1 = 9999 = 3 2 11 101. ]...
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