Which of the following statements is not true?
Correct option is D. $$0\div 0=0$$
$$\bullet$$ $$0 + 0 = 0$$, therefore Option A is correct.
$$\bullet$$ $$0 - 0 = 0$$, therefore Option B is correct.
$$\bullet$$ $$0 \times 0 = 0$$, therefore Option C is correct.
$$\bullet$$ $$0 \div 0$$ is undefined, as division by zero is not defined.
therefore Option D is incorrect
$$\therefore$$ $$\textbf{Option D is not true.}$$