Problems solved: 71

Sqaure in square	Weird equation	Area of triangle
Almost squared numbers	Tommorow's day	Small triangular numbers
Squared fours	Temirlan's cake	2020 digit
Many digits	Test	Bingo!
Money date	2020 Palindromes	Numbers ratio
One three-digit number	Just sequence	Math lesson
Special square	Sequenta	Pentagon
Switchers	First geometry	All such
Product of differences	What a function	Odd divisors
Relatively prime with 2020	Oh-matrix	NRD pair
Zero sequence	Positive product of sums	Viet said
Cubical squares	Sum probability	Friendly rooks
Sum of four	Tricky sequence	Prime powers
Arithmetic derivative	C Sum	Four on a circle
Convex triangle	Similar polynomials	Triangle in hyperbola
Exactly two roots	Powers of 6	Random answer
6 Apart	Sum of digits 2020	2+1
Cool-divisble numbers	Divisibility by 4	x[x]
Polynomial without 4	Orthocenter	335577
Progressive sequence	Tricky polynomial	Solutions on the interval
Square multiples of 24	VNT	Too much
Odd polynomial	Expanding brackets	Where is my husband
Infinite game

Games

Under construction