Problems solved: 24

Polynomial without 4	Squared fours	Product of differences
Fractions	Small triangular numbers	5 instead of 1
Bingo!	Weird equation	Area of triangle
Sum of digits 2020	Friendly rooks	2+1
Lucky numbers	One three-digit number	Money date
2020 Palindromes	2020 digit	Random answer
Sum of four	Numbers ratio	Tommorow's day
Test	Cubical squares	Temirlan's cake

Games

Under construction