Question

12+0=12.then 0 is called
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Answer 1

Answer:

Then the zero is called unitless

Thank You

Answer 2

Answer:

It is called arithmetic expression.

In ordinary arithmetic, the expression has no meaning, as there is no number which, when multiplied by 0, gives a (assuming a ≠ 0), and so division by zero is undefined.

Since any number multiplied by zero is zero, the expression 00 is also undefined; when it is the form of a limit, it is an indeterminate form.