Question

using this
\begin{array}{l|l|l}

i want no outside borders like this:

Answer 1

```
\[
\begin{array}{|l|l|l|}
\hline 1&2&3\\
\hline a&b&c\\
\hline
\end{array}
\]
```
\[
\begin{array}{|l|l|l|}
\hline 1&2&3\\
\hline a&b&c\\
\hline
\end{array}
\]

```
\[
\begin{array}{lll}
4&5&6\\
d&e&f\\
\end{array}
\]
```
\[
\begin{array}{lll}
4&5&6\\
d&e&f\\
\end{array}
\]