1. ## test

By typing the following, the two boxes with its number contents are lying next to each other from left to right:

$\boxed{\begin{array}{cccc}16&02&03&13\\
05&11&10&08\\
09&07&06&12\\
04&14&15&01\end{array}}\boxed{\begin{array}{cccc}1 6&02&03&13\\
05&11&10&08\\
09&07&06&12\\
04&14&15&01\end{array}}$

How would I set it up whereby one box is sitting above the other box?

2. $\begin{array}{c}\boxed{\begin{array}{cccc}
16&02&03&13\\
05&11&10&08\\
09&07&06&12\\
04&14&15&01\end{array}}\\
\boxed{\begin{array}{cccc}
16&02&03&13\\
05&11&10&08\\
09&07&06&12\\
04&14&15&01\end{array}}
\end{array}$

3. Originally Posted by Unknown008
$\begin{array}{c}\boxed{\begin{array}{cccc}
16&02&03&13\\
05&11&10&08\\
09&07&06&12\\
04&14&15&01\end{array}}\\
\boxed{\begin{array}{cccc}
16&02&03&13\\
05&11&10&08\\
09&07&06&12\\
04&14&15&01\end{array}}
\end{array}$

Excellent. This prompts two questions:

1) What purpose does the solitary c in {c} serve?

2) Why does the second end array rearrange the arrays from left to right to top to bottom?

4. {c} is for only one column.

The second question... I'm not too sure I understand...

It's like you are doing a main table with two cells, one on top of the other.
In the first cell, you insert a table.
in the second cell, you insert another table.

5. Originally Posted by Unknown008
{c} is for only one column.

The second question... I'm not too sure I understand...

It's like you are doing a main table with two cells, one on top of the other.
In the first cell, you insert a table.
in the second cell, you insert another table.
In regards to your second question, the source code shows:

"...end{array}}
\end{array}"

I know that the first end{array} links up with begin{array} so what would be the purpose of the second end{array}? Does it put the second array below the first array of numbers?

6. It's a little like brackets.

\begin{array} -1 opens first table
\begin{array} -2 opens second table
\end{array} -2 closes first table
\begin{array} - 3 opens third table
\end{array} - 3 closes third table
\end{array} - 1 closes first table

7. Originally Posted by Unknown008
It's a little like brackets.