The identity element of N. w-r-t "+" is?
Correct answer: D. None
- A. 1
- B. 0
- C. 2
- D. None
Explanation
In the context of the natural numbers (N) and the addition operation (+), there is no identity element with respect to addition. The identity element for addition is an element e such that for any element a, a+e=e+a=a.However, in the set of natural numbers under addition, there is no natural number that, when added to any other natural number, leaves the other number unchanged. The natural numbers start from 1 to infinity, and "0" is not included in this set.
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