Question

What is reciprocal of a negative and positive rational number?

Answer 1

A number that can be expressed in the form p / q , where p and q are integers and q ≠ 0, is called a rational number.

• All integers and fractions are known as rational numbers.

• If the numerator and denominator of a rational number are multiplied or divided by a non-zero integer, we get a rational number which is said to be equivalent to the given rational number.

⇒ IMPORTANT 

• Rational numbers are classified as positive, zero or negative rational numbers. When the numerator and denominator both are positive integers or both are negative integers, it is a positive rational number. When either the numerator or the denominator is a negative integer, it is a negative rational number.

• The number 0 is neither a positive nor a negative rational number.

Answer 2

Take any negative rational no..... For eg.---> -5/7.... Its reciprocal = -7/5......... If it was 7/-5.... Then it is also OK as - sign represents the whole fraction, not just a numerator or a denominator.... - sign can be kept as common and the rational.no. is written ........................ Now take a positive rational no...... For eg.---> 3/7........ Its reciprocal = 7/3.........