Wednesday, 18 July 2012

Is 0 a rational or Irrational number

Before comparing that Is 0 a rational or Irrational number, it is necessary to learn about the rational and irrational. Rational number can be defined as a number which is written in the fraction form or written in p/q (in ratio). For example: 1.2 the number is rational because it is also written in the fraction form. So we can write it as 6/5. An irrational number can be defined as a real number which cannot be written in the fraction form or cannot be written in p/q form. For example: pi the value of pi is 3.14 it is not in the ratios. So pi is included in the categories of irrational number. In word we can say that the numbers are not rational are all irrational numbers.
Now we will see Is 0 a rational or Irrational number? According to the definition of rational number and irrational number we can easily say that ‘0’ is rational number because it can be written in the form of p/q or in form of fraction. If we write 0 in fraction form then we can write it as:
รข‡¨ 0 / 1 = 0
We can easily compare any number using the definition of rational number and irrational number.  Suppose we have given some number 9.5, 5, 1.75, √2, 0.111, √3, √99, now find which number is rational number and which one is irrational number. (know more about Is 0 a rational or Irrational number, here)
According to the definition of rational number and irrational number we can easily compare the given number.
9.5 can be written as 19/2, so it is rational number. 1.75 can be written as 7/4 so it is also rational number. √2, √3 and √99 cannot be written in the fraction form so these numbers are irrational number. And 0.111 can be written as 1/9 so it is also a rational number. So this is all about the rational and irrational number.
Now we will see the Units of Density, unit of density is given as kg/m3. Before entering in the examination of 10th class please focus on 10th maths question paper. It is very helpful for exam point of view and In the next session we will discuss about Irrational Numbers List. 

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