Problems solved: 36

Bools and cows	Sum of digits 2020	Square multiples of 24
Friendly rooks	Bingo!	Regular Polygons
Divisibility by 4	Squared fours	Relatively prime with 2020
Five Primes	6-sums	Just Easy Sum
Lucky numbers	Digital Cubes	Just sequence
Small triangular numbers	Not your business	5 instead of 1
2+1	One three-digit number	Money date
2020 Palindromes	Difference of squares	Uneven numbers
Sum of Digits	Area of triangle	Sum of four
Random answer	2020 digit	Numbers ratio
Product of differences	Point O	Cubical squares
Tommorow's day	Temirlan's cake	Test

Games

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