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138
Google question: In a country in which people only want boys
Mar 12 '10 at 9:37
57
Which mathematicians have influenced you the most?
Mar 26 '10 at 5:09
39
Which popular games are the most mathematical?
Feb 1 '10 at 9:54
33
What are your favorite instructional counterexamples?
Mar 4 '10 at 1:43
32
What is the effect of adding 1/2 to a continued fraction?
Apr 25 '13 at 4:36
32
Examples of theorems misapplied to non-mathematical contexts
Apr 12 '11 at 17:32
29
Cocktail party math
Jan 30 '10 at 2:13
28
What is the probability that two random walkers will meet?
Aug 13 '10 at 10:31
27
For a linear recurrence sequence $(u_n)_{n\geq 0}$, can $\{i \mid u_i > 0\}$ be the set of Fibonacci numbers?
Nov 1 '15 at 18:10
26
Why is it hard to prove that the Euler Mascheroni constant is irrational?
May 2 '13 at 3:15
26
Theorems with unexpected conclusions
Mar 14 '10 at 5:49
25
the perimeter of a non-convex set
May 16 '14 at 5:30
23
What advantage humans have over computers in mathematics?
Mar 15 at 21:47
23
A point set of power series with coefficients in {-1, 1}. Connected or not?
Nov 20 '15 at 12:03
22
Expected number of pinballs to light up all 3 channels
Sep 20 '10 at 21:25
22
Do the Baumslag-Solitar groups occur in nature?
Mar 16 '10 at 20:12
21
Most intricate and most beautiful structures in mathematics
Dec 14 '10 at 0:51
20
What “real life” problems can be solved using billiards?
Feb 5 '15 at 22:21
19
Can every $\mathbb{Z}^2$ disk be pinball-reached?
Apr 20 '13 at 9:19
19
Does $X$ embed in $Y$, and $Y$ embed in $X$, always imply that $X$ isomorphic onto $Y$?
Jun 16 '12 at 10:20
18
Show that this ratio of factorials is always an integer
May 11 '13 at 14:45
18
Most harmful heuristic?
Apr 17 '13 at 21:34
18
What relationship, if any, is there between the diameter of the Cayley graph and the average distance between group elements?
Apr 13 '11 at 0:06
17
Can the sum of two roots of unity be a root of unity?
Apr 9 '13 at 13:04
17
Fiction books about mathematicians?
Jul 8 '12 at 20:43
17
Is \mathbb{C}^{n \times n} algebraically closed?
Feb 1 '10 at 11:25
16
How do you mentor undergraduate research?
Apr 7 at 7:07
16
What to look for in applicants to graduate programs (in mathematics)?
Feb 20 '10 at 5:58
16
Which popular games are the most mathematical?
Feb 1 '10 at 13:51
15
Longest of random worm-like paths in $\mathbb{Z}^2$
Jun 22 '14 at 15:02
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