Problems solved: 21

One three-digit number	Binary polindromes	Relatively prime with 2020
Divisibility by 4	Uneven numbers	Four equal angles
Squared fours	2020 digit	Five Primes
Lucky numbers	6-sums	Temirlan's cake
Just Easy Sum	Random answer	Digital Cubes
Numbers ratio	Tommorow's day	Test
Cubical squares	2020 Palindromes	Sum of four

Games

Under construction