A number 'r' is called a rational number,if it can be written in the form of p/q, where p and q are integers and q is not equal to 0.

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Important Points

(i) The set of rational number is denoted by Q.

(ii) Every integer is a rational number.

(iii) Rational numbers are real number.

(iv) 0 (Zero) is a rational number.

(v) To find a rational number between a and b ,you can add a and b and divide the sum by 2.(a+b/2)

(vi) If we add, subtract,multiply or divide (except by zero) two rational numbers, we get rational numbers.