New FE |
Friendly rooks |
5 instead of 1 |

First geometry |
Function |
Area of triangle |

Squared fours |
Half of Octahedron |
Divisibility by 4 |

Sum of digits 2020 |
2+1 |
Parking |

Equilateral Triangles |
Angle chasing |
Not your business |

Bools and cows |
Relatively prime with 2020 |
Triangle in hyperbola |

Oh-matrix |
Point O |
Product of differences |

Just sequence |
Many digits |
2020 digit |

2020 Palindromes |
One three-digit number |
Sum of four |

Random answer |
Temirlan's cake |
Test |

Cubical squares |
Tommorow's day |
Numbers ratio |