Number Systems – Notes
Natural Numbers
Counting numbers 1,2,3,4…. are called natural numbers and the collection of natural numbers is denoted by N.
Whole Numbers
Zero along with the natural numbers represent whole numbers and the collection of Whole number is denoted by ‘W’.
Integers
Integers are collection of positive and negative numbers including zero and the collection of integers is denoted by ‘Z’.
Rational Numbers
A number ‘r’ is called a rational number, if it can be written in the form p/q, where p,q ε Z and q≠0.
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ShikshaHouse
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CBSE Class 9th Maths 1 - Number Systems - Notes
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