Problems solved: 54

Good Order	Nice Integer	Smallest number
Concatenate	Administrative function	!Fancy sequence
Interesting functions	Lin the Racoon's Debut	Nice polynomial
Daniyar's Friends	Circled	Lin's Game
Weird games	Ordered papers	Math lesson
Switchers	Exactly two roots	x[x]
Powered Numbers	Again these rooks	Tricky
Zero sequence	Fancy meal	Novirus
Sequence	Weird equation	Equilateral Triangles
Square multiples of 24	Half of Octahedron	Lin does shopping
Convex triangle	Friends Playing	Rational Polynomial
Parking	Reverse Product	Regular Polygons
Many digits	More dominos	Too much
Arithmetic derivative	MathForces Store	Number Coloring
Tricky polynomial	Bools and cows	VNT
Special square	Discriminant	Sum of digits 2020
Also palindrome	Flip	Rooks
Big set	Expanding brackets	Progressive sequence

Games

Under construction