Friday, November 9

Types of Numbers



There are Different Types of Numbers or Different Kinds of Numbers which we deal in our day today lives. Types of Numbers can be classified into various categories like natural numbers, Integers, rational numbers, irrational numbers, real numbers, even numbers and odd numbers. Natural numbers are just the counting numbers like 1, 2, 3,4,5,6,7,8,9 …etc.

In integers they are similar to natural numbers except we include negative say -2,-1, 0,1,2,3...And we include zero. Basically it is combination of natural numbers and zero and also includes all negative numbers. Let us move on to rational numbers, the number can be written as fraction of a and b, where a and b are integers like the examples as we have studied above, but b is never equal to zero. Let us say 3/2 and this is equal to 1.5 or if we have 4/2 that will result as 2.

Another example is 1/3 which results as 0.3333 repeat infinitely, this is also considered rational. Irrational is defined exactly what the word is that is it’s not rational number, that is irrational.

So it cannot be a fraction, the famous example is pie which is 3.1415… this goes on etc. which never repeats, one more important point in irrational numbers is that they do not repeat and it never terminates or never stops.

Interesting number 22/7 will give us the repeated pattern goes on and on, thus it is called irrational number. Now lets us understand about real numbers which is another Type of Numbers

Real numbers are basically any number besides imaginary numbers, any number on the number line can be real, let it be negative one. Let us also learn about even numbers which comes under category of Types of Number, even numbers are those numbers which are divisible by 2 or which can be exactly divided by 2. So let us say if we have number 4, then it is exactly divided by 2, here exactly divided means the remainder is zero.

As 2 times 2 is equals to 4, that is why 4 is an even number. Take 6, 6 also can be easily divided by 2 as 2 times 3 equals 6. Thus all the numbers which can be divided by number 2 or all the multiples of 2 are called even numbers.
All those number which cannot be divided by 2 are the odd numbers. Hence there are different Type of Number.

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