Problems solved: 21

Smallest fraction	Unordered triplet	Four equal angles
Difference of squares	Uneven numbers	Divisibility by 4
Product of differences	Friendly rooks	Convex triangle
C Sum	2020 Palindromes	Sum of four
2020 digit	Cubical squares	Revolution
Cemicirlces	Seven eleven	Digital Cubes
Negative roots	Cyclic Areas	Irreducible Fractions

Games

Under construction