{"id":7563,"date":"2021-10-26T23:05:17","date_gmt":"2021-10-26T17:35:17","guid":{"rendered":"https:\/\/mathemerize.com\/?p=7563"},"modified":"2021-11-27T17:33:52","modified_gmt":"2021-11-27T12:03:52","slug":"what-are-rational-and-irrational-numbers-with-examples","status":"publish","type":"post","link":"https:\/\/mathemerize.com\/what-are-rational-and-irrational-numbers-with-examples\/","title":{"rendered":"What are Rational and Irrational Numbers with Examples ?"},"content":{"rendered":"
Here you will learn what are rational and irrational numbers with examples.<\/p>\n
Let’s begin –<\/p>\n
A rational number is defined as number of the form a\/b where a and b are integers and b \\(\\ne\\) 0.<\/p>\n
The set of rational numbers encloses the set of integers and fractions.<\/p>\n
Rational numbers that are not integral will have decimal values. These values can be of two types :<\/p>\n
(a) Terminating (or finite) decimal fractions<\/strong> : For example, 17\/4 = 4.25, 21\/5 = 4.2 and so forth.<\/p>\n (b) Non-terminating decimal fractions<\/strong> : Amongst non-terminating decimal fractions there are two types of decimal values.<\/p>\n (i) Non-terminating periodic fractions<\/strong> : These are non-terminating decimal fractions of the type \\(x.a_1a_2….a_na_1a_2….a_n\\). For example \\(16\\over 3\\) = 5.3333, 15.23232323, 14.28762876…. and so on.<\/p>\n (ii) Non-terminating non-periodic fractions<\/strong> : These are of the form \\(x.b_1b_2….b_nc_1c_2…c_n\\). For example, 5.273168143725186….<\/p>\n Of the above categories,terminating decimal and non-terminating periodic decimal fractions belong to the set of rational numbers.<\/p>\n Fractions, that are non-terminating, non-periodic fractions are called irrational numbers.<\/p>\n Some examples of irrational numbers are \\(\\sqrt{2}\\), \\(\\sqrt{3}\\) etc. In other words, all square and cube roots of the natural numbers that are not squares and cubes of natural numbers are irrational. Other irrational numbers include \\(\\pi\\), e and so on.<\/p>\n Every positive irrational number has a negative irrational number corresponding to it.<\/p>\n All operations of addition, subtraction, multiplication and division applicable to rational numbers are also applicable to irrational numbers.<\/p>\n You should realise that once an irrational numbers appears in the solution of question, it can only disappear if it is multiplied or divided by the same irrational number.<\/p>\n\n\nIrrational Number<\/strong><\/h3>\n