If N is a Natural Number, Then √ N is - Mathematics

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MCQ

If n is a natural number, then  \[\sqrt{n}\] is 

Options

  • always a natural number

  • always an irrational number

  • always an irrational number

  • sometimes a natural number and sometimes an irrational number

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Solution

The term “natural number” refers either to a member of the set of positive integer.1,2,3.

And natural number starts from one of counting digit .Thus, if n is a natural number then sometimes n is a perfect square and sometimes it is not.

Therefore, sometimes`sqrtn` is a natural number and sometimes it is an irrational number.

  Is there an error in this question or solution?
Chapter 1: Number Systems - Exercise 1.7 [Page 40]

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RD Sharma Mathematics for Class 9
Chapter 1 Number Systems
Exercise 1.7 | Q 9 | Page 40

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