antwoorden

Opgave 1 81, 45 en 25

Opgave 2 90 en 112000

Opgave 3 648

Opgave 4 20

Opgave 5

$
\left( {\begin{array}{*{20}c}
5\\
2\\
\end{array}} \right) \times \left( {\begin{array}{*{20}c}
3\\
1\\
\end{array}} \right) = 30
$

Opgave 6

$
\begin{array}{l}
0:\left( {\begin{array}{*{20}c}
5\\
0\\
\end{array}} \right) = 1 \\
1:\left( {\begin{array}{*{20}c}
5\\
1\\
\end{array}} \right) = 5 \\
2:\left( {\begin{array}{*{20}c}
5\\
2\\
\end{array}} \right) = 10 \\
3:\left( {\begin{array}{*{20}c}
5\\
3\\
\end{array}} \right) = 10 \\
4:\left( {\begin{array}{*{20}c}
5\\
4\\
\end{array}} \right) = 5 \\
5:\left( {\begin{array}{*{20}c}
5\\
5\\
\end{array}} \right) = 1 \\
\end{array}
$

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