Mathematics
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Casteels
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All Questions Answers
Score Newest
answer
97
Express 99 2/3% as a fraction? No calculator
Jun 9, 2015
answer
54
Proof that $2^{222}-1$ is divisible by 3
Mar 12, 2015
answer
27
Rational + irrational = always irrational?
Oct 28, 2013
answer
24
when is $n!+10$ a perfect square?
Feb 24, 2015
answer
23
How can I prove that one of $n$, $n+2$, and $n+4$ must be divisible by three, for any $n\in\mathbb{N}$
Oct 11, 2013
answer
18
Infinite Series $\sum\limits_{k=1}^{\infty}\frac{k^n}{k!}$
Sep 24, 2013
answer
18
Why is the multiset of eigenvalues called spectrum?
Nov 13, 2013
answer
17
Solve $\phi(n) = 123456789 $ or prove there is no such $n$
Apr 20, 2015
answer
16
How to prove that for any graph on $8$ nodes with exactly $17$ edges has at least $4$ triangles.
Mar 4, 2014
answer
12
What is a fundamental cycle of a graph?
Oct 8, 2014
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44
What should I ask deans during my interview?
23
Why would a tenure-track job posting ask for an undergraduate transcript?
18
Should I offer to pay (some of) the travel cost from the UK to the US for an interview?
14
What should I ask deans during my interview?
13
Detecting cycles in an adjacency matrix

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