Problems solved: 35

Small triangular numbers	Sum of Digits	2+1
Equilateral Triangles	Weird equation	U turn
Zero sequence	NRD pair	Square multiples of 24
Concetric	One three-digit number	Sum of digits 2020
Area of triangle	Friendly rooks	Relatively prime with 2020
Squared fours	Seven eleven	Divisibility by 4
Money date	Five Primes	Just Easy Sum
6-sums	Temirlan's cake	Lucky numbers
Digital Cubes	Random answer	2020 Palindromes
Tommorow's day	Sum of four	Numbers ratio
Test	Fractions	Cubical squares
2020 digit	Bingo!

Games

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