what is 9 plus 10????
geez its not really funny
its 19, for goodness sake.
$${\mathtt{9}}{\mathtt{\,\small\textbf+\,}}{\mathtt{10}} = {\mathtt{20}} = \tiny\text{Error: }$$
$${\mathtt{19}}$$
That is not a funny joke 😒 but the answer is 19