Many digits |
Prime powers |
Divisibility by 4 |

Sequenta |
Friendly rooks |
Function |

Exactly two roots |
2+1 |
Numbers ratio |

All such |
Not your business |
Squared fours |

One three-digit number |
2020 Palindromes |
Cubical squares |

5 instead of 1 |
x[x] |
Random answer |

Zero sequence |
Bingo! |
Area of triangle |

Sum of digits 2020 |
Square multiples of 24 |
Relatively prime with 2020 |

2020 digit |
Odd divisors |
Cool-divisble numbers |

Just sequence |
C Sum |
Sum of four |

Tommorow's day |
Test |
Temirlan's cake |