Problems solved: 33

Many digits	Prime powers	Divisibility by 4
Sequenta	Friendly rooks	Function
Exactly two roots	2+1	Numbers ratio
All such	Not your business	Squared fours
One three-digit number	2020 Palindromes	Cubical squares
5 instead of 1	x[x]	Random answer
Zero sequence	Bingo!	Area of triangle
Sum of digits 2020	Square multiples of 24	Relatively prime with 2020
2020 digit	Odd divisors	Cool-divisble numbers
Just sequence	C Sum	Sum of four
Tommorow's day	Test	Temirlan's cake

Games

Under construction