Q. 124.6( 9 Votes )
To get the product 1, we should multiply 
by
A. 
B. 
C. 
D. 
Answer :
Multiplicative inverse of 
is 
i.e. the reciprocal of 
and hence their multiplication will be 1.
(a)Incorrect because their multiplication will be 
.
(b)Incorrect because their multiplication will be 
.
(d)Incorrect because their multiplication will be -1.
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