Q. 104.4( 10 Votes )
Multiplicative inverse of a negative rational number is
A. a positive rational number.
B. a negative rational number.
C. 0
D. 1
Answer :
Multiplicative inverse of a negative rational number is a negative rational number.
Example:
is a rational number so its multiplicative inverse is 
so that their multiplication will be 1.
⇒ Thus the multiplicative inverse is negative rational number.
(a) Incorrect because if multiplicative inverse will be positive the number obtained will have a negative sign and the result obtained will not be 1.
(c ) Incorrect because if 0 is multiplied to something the result will also be zero.
(d)Incorrect because if 1 is multiplied to a number the result obtained will not be 1.
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If y be the reciprocal of rational number x, then the reciprocal of y will be
NCERT - Mathematics ExemplarThe reciprocal of 0 is
NCERT - Mathematics ExemplarThe reciprocal of a negative rational number is ___________.
NCERT - Mathematics ExemplarThe negative of 1 is ___________.
NCERT - Mathematics ExemplarThe reciprocal of 
is
Additive inverse of
is
Options A. 
B. 
C. 
D. 
Reciprocal of
is
Options A. 
B. 
C. 
D. none of these
RS Aggarwal - Mathematics
Options A. 
B. 
C. 
D. 
Find the multiplicative inverse of (i)
(ii)
(213 × 657)–1 = 213–1 × ___________.
NCERT - Mathematics Exemplar