I WONDER - How Do You Use Roman Numerals?

The video tutorial explains how to write numbers using Roman numerals by combining different letters. It highlights the rule that no more than three of the same symbol can be used consecutively. For example, the number 4 is written as IV, which is one less than 5, and the number 5 is written as V instead of IIII.

What is the significance of the number five in Roman numerals?

Why can't you write more than three of the same symbol in a row?