Multiplicative Inverse


 
 
Concept Explanation
 

Multiplicative Inverse

Multiplicative Inverse:

For every non-zero rational number a/b there exists a rational number b/a such that

a/b × b/a = 1 = b/a × a/b

The rational number b/a is called the multiplicative inverse or reciprocal of a/b and is denoted by (a/b)-1.

The reciprocal of 12 is 1/12

The reciprocal of 5/16 is 16/5.

 

Sample Questions
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Question : 1

Find the multiplicative inverse of :   -5/8 times - 3/7   

Right Option : B
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Question : 2

Reciprocal of  frac {1}{8} is  __________________

Right Option : D
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Question : 3

Reciprocal of  frac {6}{3}  is  __________________

Right Option : C
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