I started recalling roman numerals when I visited Chicago public library. I immediately realized that it was arduous task to figure the number out. My roman number skills were blunt; it demanded an immediate attention to log forgotten number system.

×1 | ×2 | ×3 | ×4 | ×5 | ×6 | ×7 | ×8 | ×9 | |
---|---|---|---|---|---|---|---|---|---|

Ones | I | II | III | IV | V | VI | VII | VIII | IX |

Tens | X | XX | XXX | XL | L | LX | LXX | LXXX | XC |

Hundreds | C | CC | CCC | CD | D | DC | DCC | DCCC | CM |

Thousands | M | MM | MMM | IV | V | VI | VII | VIII | IX |

Ten thousands | X | XX | XXX | XL | L | LX | LXX | LXXX | XC |

Hundred thousands | C | CC | CCC | CD | D | DC | DCC | DCCC | CM |

After seeing this table, roman numerals appeared pretty simple. However, a thought crossed my mind. How I will write 21890 in roman numerals?

M – thousandso, should I write 21 times M to denote 21,000. Are romans so dumb that they didn’t thought more than 21,000. Ofcourse, they had more soldiers than 21,000 in roman army?

another question: Second, what was the size of roman army at different times? But I would think abt it later.

Right now, I’ve to focus only on roman numerals. I discovered MMM CM XC IX (3,999) is the largest number possible without choosing overlines. Now, I guess romans ran out of symbols for numeric system. So, they started drawing overlines on the existing symbol. So, they decided to overline above existing numbers to denote it is thousand number

__ IV – 4000 __ __ __ __ __ V – 5000 , X – 10000, C – 100,000 , D – 500,000, M -1000,000So, back to question, how I’ll write 21,890.

___ XX DCCC XCI’m now impressed by Roman numeral skills, I’m moving to another topic.