MTMTK System |
Half of Octahedron |
Weird games |

Parking |
Again these rooks |
Equilateral Triangles |

Positive product of sums |
Angle chasing |
Prime powers |

Cool-divisble numbers |
Solutions on the interval |
Infinite game |

Math lesson |
Too much |
Divisibility by 4 |

Sqaure in square |
Odd divisors |
Viet said |

Polynomial without 4 |
Tricky polynomial |
Sum of digits 2020 |

Many digits |
Simple expression |
5th power equation |

First geometry |
Almost squared numbers |
Point O |

Odd polynomial |
Product of differences |
U turn |

Zero sequence |
Arithmetic derivative |
x[x] |

Triangle in hyperbola |
Four on a circle |
Squared fours |

Similar polynomials |
Oh-matrix |
Pentagon |

6 Apart |
Relatively prime with 2020 |
Powers of 6 |

2020 digit |
All such |
Sum probability |

Bingo! |
Not your business |
Small triangular numbers |

Friendly rooks |
Exactly two roots |
Function |

Expanding brackets |
335577 |
Weird equation |

Sequenta |
VNT |
Minimizing Fibb |

C Sum |
Square multiples of 24 |
Random answer |

2020 Palindromes |
One three-digit number |
Area of triangle |

2+1 |
Money date |
Sum of four |

Just sequence |
What a function |
NRD pair |

Test |
Cubical squares |
Tommorow's day |

Temirlan's cake |
Numbers ratio |