What symbols were used for the roman numerals?

Answer 1

Numeral Decimal

I 1

V 5

X 10

L 50

C 100

D 500

M 1000

Anything larger is cumbersome, but can be formed by using a "prefix" numeral:

5000 = VM

6479 = VIMCDLXXIX

Also putting a line over a number would indicate that number being multiplied by one thousand.

Answer 2

I am assuming that Wiki has changed 'I' into 'You' in the question, so the Roman numeral I = 1. But just in case you mean U, the Romans used the Letter V to represent the modern letter U and they also used the symbol V to represent 5 in numerals.

Answer 3

The Roman numerals are typically represented by seven different symbols: I (1), V (5), X (10), L (50), C (100), D (500), and M (1000). These symbols are combined in various ways to represent different numbers.