Book: RD Sharma - Mathematics
Chapter: 1. Rational Numbers
Subject: Maths - Class 8th
Q. No. 5 of Exercise 1.6
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5
Find the multiplicative inverse (reciprocal) of each of the following rational numbers:
(i) 9
(ii) -7
(iii) 
(iv) 
(v) 
(vi) 
(vii) 
(viii) 
(ix) -1
(x) 
(xi)1
(i) Reciprocal of 9 is 
(ii) Reciprocal of –7 is 
(iii) Reciprocal of 
is 
(iv) Reciprocal of 
is 
(v) Reciprocal of 
is 
(vi) 
* 
= 
Reciprocal of 
is 
(vii) 
* 
= 
Reciprocal of 
is 
(viii) -2 * 
= 
Reciprocal of 
is 
(ix) Reciprocal of -1 is -1
(x) Reciprocal of 
is not defined as in the form of 
, q = 0, so it is not a rational number
(xi) Reciprocal of 1 is 1
