Number of points lying on a line in a projective plane of 7 points
127215
Number of points on a line in a finite projective plane
80670
'Lines' in the Euler phi graph
117020
Regular $n$-gon in the plane with vertices on integers?
44214
The number of subsets of a set of cardinality $n$
103575
Let $A,B,C,D,E$ be five points marked in clockwise direction on the unit crcle in the plane wth centre at origin.
113454
Find the locus of this point P
141927
In the card game "Projective Set": Compute the probability that $n$ cards contain a set
44795
Sum of areas of triangles which have corners which are lattice points with 74 lattice points inside.
151732
Number of solutions of polynomials in a field
35083
Creating a Grid on a polygon and find number of points in each grid
126583
Coloring points on an n-gon
86115
Generating uniform points inside an $m$-dimensional ball
100164
Tennis tournament proof that $n + 1$ players can form a line
30898
Orientability of projective space
73578
Do infinitely many points in a plane with integer distances lie on a line?
92554
How many lattice paths are there from $(0,0)$ to $(2n,2n)$ that avoids odd points
101734
$7$ points inside a circle at equal distances