Final Cover - For Printing

RATIONAL NUMBERS

1. Rational number
   Any number which can be expressed in the form qp, where p and q are integers
   and q≠ 0 is called as a rational number. The set of rational numbers is denoted by the
   letter Q.

Eg. : 53 , − 85

Note that the set of rational numbers comprises of natural numbers, whole numbers,

fractions and integers.

The idea of rational numbers needs verbal explanation along with necessary Braille
text material.

2. Irrational number
   Any number which cannot be expressed in the form qp, where p and q are integers
   and q ≠0 is called an irrational number.

Eg. : 2 = 1.414... is an irrational number. Similarly, 3 , 5 , 6 , 7 , 8 and

10 etc., are also irrational numbers.

The idea of irrational numbers may be explained orally with the assistance of necessary

Braille text material.

Module 53