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Q.

Find the multiplicative inverse of each of the following: - 3+8


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a

1

b

0

c

1 3+8

d

3+8 

answer is C.

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Detailed Solution

We know that the multiplicative inverse of a number x is 1x​, which when multiplied by x gives the multiplicative identity 1 that is x×1x=1
Now since,  3+8×1 3+8=1
Then, the multiplicative inverse of  3+8 is 1 3+8
Hence (3) is the correct option.
 
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Find the multiplicative inverse of each of the following: - 3+8