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Mathematics
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18
Why is a circle not a convex set?
Nov 12, 2017
9
Is it true that for every prime number $p >3$, the next one will be less than $p+p/2$?
May 29, 2013
8
Reflection with respect to a parabola
Apr 28, 2016
8
Correct set notation for "all integers which are not multiples of 7"?
Mar 2, 2016
6
Prove that $x^2+1$ cannot be a perfect square for any positive integer x?
Mar 29, 2016
5
How do you prove that there are infinitely many primes of the form $5 + 6n$? [duplicate]
May 31, 2013
5
Combinations of 6 students among 20, at least one male
Mar 21, 2016
5
How much should you save of your income if you work from 22 to 65, and want 80% of your last salary after you retire?
Jan 16, 2017
4
Is it possible to determine if you were on a Möbius strip?
Sep 6, 2017
4
Formalising the problem and create a proof for the game "Waffle"
Apr 3
Top network posts
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75
How to avoid being falsely accused of harassment by a student?
58
How was New Horizons able to direct data so precisely back to Earth?
46
How to force weights to be non-negative in Linear regression
31
Son was sent home from sleepover for behavior
27
Can neutrinos "hit" electrons?