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Number Systems Exercise 1.1 Q1 Mathematics Class 9 NCERT

Exercise 1.1 Question 1 Number System Class 9 Maths

Question: Is zero a rational number? Can you write it in the form p/q, where p and q are integers and q ≠ 0?

Solution:  We know that a number is said to be rational if it can be written in the form p/q, where p and q are integers and q ≠ 0 .

Zero can be written in the form of 0/1, 0/2, 0/5…….as well as 0/-1, 0/-250, 0/-3…..

Since satisfies the necessary condition we can conclude that 0 can be written in the form of p/q, where q can be either positive or negative number. 

Hence zero(0) is a rational number.

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