Friday, 27 July 2012

Roman Numbers

In the previous post we have discussed about multiplication of whole numbers
 and In today's session we are going to discuss about Roman Numbers. Roman numbers are number representation system which uses a combination of letters to represent any numerical value. Roman numbers are the numbers which discovered from the ancient roman period. Roman numbers are the combination of Latin alphabets which is popularly used for to signify the values. Roman numerals are special kind of number representing system which has an additive system of letter popularly used for base value numbers. Roman numbers or values are not directly positioned and they do not have any symbol for  representing a value of zero. (know more about Roman Numbers, here)
In the below we show some of the symbol that help us in forming other roman values:
Symbol => I    V    X    L       C          D      M
 Value    =>1    5    10   50    100    500  1000
The roman numbers can be formed by adding symbol together that will generate a new value. Now we show some of basic combination of roman numbers from one to ten that are given below:
Number =>            1    2    3    4    5    6    7    8      9   10  
Roman no. =>        I    II   III    IV   V   VI  VII  VIII  IX    X
Now we show some of pattern that helps you in understanding the concept of Roman Numbers:
Suppose we want to represent a number 40 in the form Roman numeral now we need to process this thing step by step. Let’s show you below:
 As given that value of 50 = L
Then we need required 40 then = 50 – 10 = 40
It means that                                 = L – X = XL
In the same aspect we want to represent value of 60 then
As given that value of 50 = L
Then we need required 60 then = 50 + 10 = 60
It means that                                 =  L + X = LX

In mathematics, the Surface Area of Rectangular Prism can be describe by using the concept of rectangle that are given below:
 2 * Length * Width  + 2 * (Length + Width )* Height
For 10th board examination, cbse board provides cbse class 10 sample papers for exam preparation.

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