Roman Numbers - Mathematics

Roman Numbers



By Aashish Sir



Roman Numbers

There are certain English Alphabets which are used to represent numerals in Roman.  
These are  I  ,  V ,  X  ,  L   ,  C  ,  D  ,  M.

These Alphabets represent different number like
I           represent      1
V          represent      5
X          represent      10
L          represent      50
C          represent      100
D          represent      500
M         represent      1000

Combination of these Alphabets in a specific pattern represent different numerals in Roman Numbers.

But there are some rules for using these alphabets for constructing Roman numbers

Rule 1 -   

We cannot place same alphabet more than three times one after other.

Only I, X, C and M can be used 3 times one after other.


Rule  2 -  

V, L and D cannot be placed more than once.


Rule  3 -  

I , X and C can only be used before other alphabets for subtraction. 

Here we are presenting a list of Roman Numbers - 

1       -    I             

2       -    I I                 

3       -    III 

4    =    5 -  1   =    IV          

5       -        V                 

6      =    5   +   1   =      VI

7      =    5   +   2   =      VII         

8      =    5   +   3   =      VIII              

9     =     10 -  1  =     IX

10  -    X          

11     =  10 + 1  =  X  +  I      =    XI                

12     =  10 + 2  =  X  +  II     =    XII

13      =  10 + 3  =  X  +  III    =    XIII        

14      =  10 + 4  =  X  +  IV    = XIV              

15      =  10 + 5  =  X  +  V     = XV

16      =  10 + 6  =  X  +  VI    =XVI        

17      =  10 + 7  =  X  +  VII  =XVII              

18      =  10 + 8  =  X  + VIII =XVIII

19      =  10 + 9  =  X  +  IX   =XIX        

20      =  10 + 10  =  X  +  X  =XX   

40 = 50 - 10 =   XL

90 = 100 - 10 = XC

400 = 500 - 100 =  CD

900 = 1000 - 100 =  CM


 

 महत्वपूर्ण लिंक

Roman Numbers

https://mathskkgoenka.blogspot.com/2021/05/Roman-Numbers.html


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