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-√0.4. Classify the following numbers as rational or irrational with justification

Solution:

It is given that

-√0.4

We can write it as

= -√4/10

= -2/√10

Which is an irrational number.

Therefore, the given number is an irrational number.

✦ Try This: Classify the following numbers as rational or irrational with justification: -√0.9

It is given that

-√0.9

We can write it as

= -√9/10

= -3/√10

Which is an irrational number.

Therefore, the given number is an irrational number.

☛ Also Check: NCERT Solutions for Class 9 Maths Chapter 1

NCERT Exemplar Class 9 Maths Exercise 1.2 Problem 4(v)

-√0.4. Classify the following numbers as rational or irrational with justification

Summary:

Irrational numbers are the set of real numbers that cannot be expressed in the form of a fraction, p/q where p and q are integers. -√0.4 is an irrational number

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