4. RATIONAL NUMBERS

Every rational number can be representing in the form of p/q and q is not equal to zero.Both are real number, rational numbers are frequently expressed as decimals.
For example, ¼= 0.25, 5/8= 0.625,
                        1/3= 0.3333….,                       6/11=0.5454…, etc.
The decimal said to be “terminating” if the remainder is zero, otherwise it is called “non-terminating”.
Non-terminating is of two types. If the expansion contains repeated blocks of digits, as in the case of 1/3 and 6/11, this is a rational number. If the expansion does not contain repeated blocks then the number is irrational...
The term rational in reference to the set Q refers to the fact that a rational number represents a ratio of two integers.Note: In retinal numbers the common fraction is changed in decimal fractions and decimal is changed in common fractions.
Natural, Integers (positive and negative) prime, whole, odd, even and compound numbers etc are rational numbers.