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Number System (Types Of Numbers)

Harman K.
05/09/2017 0 0

Types Of Numbers:

  • Natural Number: All the counting nos. are called natural nos. Example: 1,2,3, etc
  • Even natural number: These nos are divisible by 2.  Example: 2,4,6, etc.
  • Odd natural number: These are nos which are not divisible by 2. Example 3,5,7, etc.
  • Prime number: These are the nos which are not divisble by any no. and are only divisible by themselves. Example: 2 ,3,5,7,11,13,17,19, etc.
  • Coprime Number: The nos in which the highest common factor is 1. Example 17 and 29.
  • Whole Number: They are same as natural nos. Only '0' is included in this set.
  • Integers: All nos including negative nos and the number zero are called integers. Example: 1,-2,0,1,2.
  • Rational and irrational numbers: Any number which can be expressed in the form of p/q, and q is not 0, is a rational number. Example 3/5 ,4/1. Irrational no is whose answer is in the form of non terminating or terminating decimal such that  √2=1.414, √3=1.732.
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