What are 26 facts about the now defunct system of Roman numerals from A to Z?

Answer 1

1 An abacus counting device was once used to work out Roman numerals

2 Brackets were used to increase their values

3 C is the equivalent of 100

4 Dollar bills have Roman numerals on them in the form of MDCCLXXVI

5 Etruscans conceived this system of numeracy and they once ruled the Romans

6 Four was never IV for 4 for fear of offending the Roman god Jupiter

7 Gregorian calendar was introduced in MDLXXXII by Pope Gregory XIII

8 Hundred thousand is the equivalent of (C)

9 I is the equivalent of one

10 Julius Caesar used Roman numerals to change the year into 12 months

11 Kings and Queens use Roman numerals in their titles

12 L stands for 50 and (L) is increased to 50,000

13 M means 1,000 and (M) means one million

14 November was once the IX month of the Roman year

15 October was once the VIII month of the Roman year

16 Prime numbers are also found in Roman numerals

17 Quadraginti is the Latin word for the Roman numerals of XXXX or XL

18 Roman numerals and their original rules were changed in the Middle Ages

19 S is the Roman numerical fraction for 1/2

20 Thirty nine is now XXXIX but once it was XXXVIIII or IXL

21 Undeviginti is the Latin word for 19 which is now XIX but should be IXX

22 V is the equivalent of 5 and (V) is equivalent to 5,000

23 Writing and calculating them are different today than in Roman times

24 X is the same as 10 and (X) is the equivalent of 10,000

25 Years are often misrepresented in Roman numerals

26 Zero is the equivalent of N meaning nought but was never needed

QED