Advanced Knowledge Problem of the Week 4-30-19: Primitive Root and -1 [Number Theory]

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Problem of the Week 4-25-19: Divisors of a Power of 10 [Number Theory]

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Advanced Knowledge Problem of the Week 4-23-19: Solutions of Linear Polynomials [Number Theory]

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Problem of the Week 4-18-19: Find the Real Solution [Algebra]

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Advanced Knowledge Problem of the Week 4-16-19: A Strange Function [Real Analysis]

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Problem of the Week 4-11-19: Complex Roots of a Quartic [Algebra]

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