A school is choosing a uniform for their sports program for their girls. They can pick green, blue, or red jumpers, and they can pick brown or black skirts. Assuming all the colours go together, how many different combinations can the school pick?

Question

$\begin{array}{11} (a)\;10 \\ (b)\; 6 \\ (c)\; 5 \\ (d)\; 12 \end{array}$