First geometry |
Flip |
Friendly rooks |

Gineq |
New FE |
Concetric |

Lucky numbers |
6-sums |
Sum probability |

Product of differences |
Triangle in hyperbola |
U turn |

Novirus |
Bools and cows |
5 instead of 1 |

Sum of digits 2020 |
Simple expression |
Not your business |

Many digits |
Minimizing Fibb |
C Sum |

Oh-matrix |
Just sequence |
2020 digit |

Area of triangle |
Zero sequence |
Bingo! |

Squared fours |
Divisibility by 4 |
Parking |

Equilateral Triangles |
Small triangular numbers |
Weird equation |

Expanding brackets |
2+1 |
Function |

Square multiples of 24 |
Relatively prime with 2020 |
Random answer |

Tommorow's day |
2020 Palindromes |
Test |

Temirlan's cake |
Cubical squares |
Money date |

Sum of four |
One three-digit number |
Numbers ratio |