9th mathematics NCERT exercise questions with answers, Mathematics

Number System – Class IX [CBSE]

Rational Number: A number ‘r’ is called a rational number, if it can be written in the form p/q ,where p and q are integers and q ≠ 0. The collection of rational numbers is denoted by Q. (Why do we insist that q ≠ 0?) Notice that all the numbers now in the bag can… Continue reading Number System – Class IX [CBSE]

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9th mathematics NCERT exercise questions with answers, Mathematics

Number System – Exercise 1.1 – Class IX

Is zero a rational number? can you write it in the form p/q, where p and q are integers and q≠0. ? Solution: Yes, zero is rational number. It can be written as 0/1, 0/2 etc., it is in the form of p/q, where p and q are integers and q≠0 Find six rational number… Continue reading Number System – Exercise 1.1 – Class IX