Roman Numerals in MATHS and Rules

Roman Numbers to Hindu Arabic Number Table -

Roman Numbers	I	V	X	L	C	D	M
Hindu Arabic Numbers	1	5	10	50	100	500	1000

 Rules of Roman numerals -

1. Repetition of roman numerals mean addition.
2. Only I,X,C,M can be repeated.
3. V,L,D can't be repeated.
4. No symbol can be repeated more than three times.
5. Smaller numerals written to the left of larger numerals means subtraction.
6. "I" can be subtracted from "V" and "X" only. 

A Joke - Learning ABCD

There was a boy he went to the school. It was an English slot his mam told to tell abcd he told I don’t no then mam told to learn abcd and come tomorrow.

He asked his mother to tell abcd she told shut up, he noted,

Then he went to his father he was talking to his girl friend he told ajj nahi darling kal chalenga he noted,

Then he went to his big sister she was listening songs “aek baar theko hajar baar theko ye thekne ki chij hae, he noted again,

Then next time mam told him to say ABCD, he told shut up,

Mam told I take you to principal,

He told aaj nahi darling kal chalenga,

Then mam made him stand in the ground in the underwear he started singing “aek baar theko hajar baar theko ye thekne chij hay.”