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378 Answers

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51	Intervals that are free of primes
27	Best Fake Proofs? (A M.SE April Fools Day collection)
24	A finite summation involving $2013$
14	The value of $(2^n+3^n+4^n)^{1/n}$ as $n \rightarrow \infty?$
14	$\left( \begin{array}{cc} 1 & 1 \\ 0 & 1 \\ \end{array} \right)$ not diagonalizable

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8,905 Reputation

+10	Let n>30. Then prove there exists a natural number $ 1< m\leq n$ such that $(n,m)=1$ and $m$ is not prime.
+10	Prove that $f(f(x))=x$ has no roots … $f$ having a general form
+35	How can I prove that $\sin (10^\circ), \sin(1^\circ), \sin(2^\circ), \sin(3^\circ), \tan(10^\circ)$ are irrational
+10	series convergence

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128 Tags

132 elementary-number-theory × 41	69 sequences-and-series × 36
108 linear-algebra × 61	54 calculus × 39
99 homework × 58	53 limit × 17
97 real-analysis × 62	51 analytic-number-theory
92 number-theory × 19	50 analysis × 26

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