Problems solved: 23

Friendly rooks	Area of triangle	Relatively prime with 2020
Sum of digits 2020	Squared fours	C Sum
2020 Palindromes	Odd divisors	Just sequence
Product of differences	Divisibility by 4	Oh-matrix
NRD pair	Sum of four	2020 digit
Cubical squares	Tommorow's day	Numbers ratio
Temirlan's cake	Test	Point O
VNT	Random answer

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