Book: RS Aggarwal & V Aggarwal - Mathematics
Chapter: 1. Real Number
Subject: Mathematics - Class 9th
Q. No. 5 of Exercise 1C
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5
Giving reason in each case, show that each of the following numbers is irrational.
(i) 
(ii) 
(iii) 
(iv) 
(v) 
(vi) 
(i) 
We cannot simplify 
Hence 4 + 
is an irrational number.
(ii) 
= 
We can’t simplify 
Hence it is an irrational number.
(iii) 
We can’t simplify 
Hence it is an irrational number.
(iv) 
= 
We can’t simplify 
Hence it is an irrational number.
(v) 
We cannot simplify 
Hence it is an irrational number.
(vi) 
We cannot simplify 
Hence it is an irrational number.
