Sqaure in square |
Weird equation |
Area of triangle |

Almost squared numbers |
Tommorow's day |
Small triangular numbers |

Squared fours |
Temirlan's cake |
2020 digit |

Many digits |
Test |
Bingo! |

Money date |
2020 Palindromes |
Numbers ratio |

One three-digit number |
Just sequence |
Math lesson |

Special square |
Sequenta |
Pentagon |

Switchers |
First geometry |
All such |

Product of differences |
What a function |
Odd divisors |

Relatively prime with 2020 |
Oh-matrix |
NRD pair |

Zero sequence |
Positive product of sums |
Viet said |

Cubical squares |
Sum probability |
Friendly rooks |

Sum of four |
Tricky sequence |
Prime powers |

Arithmetic derivative |
C Sum |
Four on a circle |

Convex triangle |
Similar polynomials |
Triangle in hyperbola |

Exactly two roots |
Powers of 6 |
Random answer |

6 Apart |
Sum of digits 2020 |
2+1 |

Cool-divisble numbers |
Divisibility by 4 |
x[x] |

Polynomial without 4 |
Orthocenter |
335577 |

Progressive sequence |
Tricky polynomial |
Solutions on the interval |

Square multiples of 24 |
VNT |
Too much |

Odd polynomial |
Expanding brackets |
Where is my husband |

Infinite game |