# Classify the Following Numbers as Rational Or Irrational - Mathematics

Sum

Classify the following numbers as rational or irrational :-

 2-sqrt5

#### Solution

2-sqrt5

2 is a rational number and sqrt5 is an irrational number.

therefore 2-sqrt5 " is an irrational number."

∴ The difference of a rational number and an irrational number is irrational.

Concept: Operations on Real Numbers
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#### APPEARS IN

NCERT Class 9 Maths
Chapter 1 Number Systems
Exercise 1.5 | Q 1.1 | Page 24