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(reciprocal) of:   large frac{-7}{9}

Right Option : B
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Question : 2

Reciprocal of  2frac {1}{3} is  ___________________

Right Option : D
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Explanation
Question : 3

Find the multiplicative inverse of : - 1

Right Option : A
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