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 |