A white number inside a black circle.
112260
Good way to make \textcircled numbers?
147861
Packing squares into a circle
33161
Find the image of (1,1,1) by T
13260
Choosing $101$ numbers from $\{1, 2, \dots , 200\}$.
100404
Angle subtended at the centre by a segment of a circle
140851
Precalculus unit circle with imaginary axis.
9092
What is special about square numbers here?
4505
Number of students in school club : $4$ Circles Venn Diagram Puzzle
37056
A Polygon is inscribed in a circle $\Gamma$
45240
Starting digits of $2^n$.
101884
Orange ring in a black hole image
100939
Circle with two borders
112952
Wrap text around a Circle without deforming it. (numbers on clock)
88220
Labelling objects in a picture with numbers
142781
What exactly is a number?
26180
Identify this symbol: two circles overlapping
153969
The "elements" of a real number