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Mathematics
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detnvvp
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answer
50
Can every integer greater than 5 be written as the sum of exactly one prime and one composite?
Feb 28, 2016
answer
18
If every real-valued continuous function is bounded on $X$ (metric space), then $X$ is compact.
Feb 8, 2014
answer
13
Step Function and Simple Functions
Aug 25, 2013
answer
10
Does There Exist an Injective Continuous Map $f:\mathbf R^3\to \mathbf R^2$.
Nov 2, 2015
answer
10
If $f(x+1)+f(x-1)=\sqrt 3 f(x), \forall x$ then $f$ is periodic.
Aug 7, 2016
answer
9
Completeness of Measure spaces
Oct 29, 2016
answer
9
The derivative of $e^x$ using the definition of derivative as a limit and the definition $e^x = \lim_{n\to\infty}(1+x/n)^n$, without L'Hôpital's rule
Oct 27, 2013
answer
7
Is the set of all prime numbers bounded?
Nov 4, 2015
answer
7
Prove that $\sin 10^\circ \sin 20^\circ \sin 30^\circ=\sin 10^\circ \sin 10^\circ \sin 100^\circ$?
Jul 12, 2013
answer
7
Schwartz Class Functions on Integers
Aug 22, 2013