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Q.

What is the additive identity element in the set of whole numbers?


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a

0

b

-1

c

1

d

None of these 

answer is A.

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Detailed Solution

The additive identity of any number ‘a’ is the number added to ‘a’ such that the sum is the same as ‘a’.
Let the additive identity of any number ‘a’ be n.
So, according to the definition, we get,
a+n=a a+n−a=0 ⇒n=0
Thus, the additive identity of any number is 0.
Therefore, the correct option is 1.
 
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What is the additive identity element in the set of whole numbers?