Edexcel D1 2013 January — Question 3

Exam BoardEdexcel
ModuleD1 (Decision Mathematics 1)
Year2013
SessionJanuary
TopicCombinations & Selection

3. \begin{figure}[h]
\includegraphics[alt={},max width=\textwidth]{bd6edbd4-1ec0-4c7e-bd39-b88f96bf52fb-3_743_625_758_269} \captionsetup{labelformat=empty} \caption{Figure 2}
\end{figure} \begin{figure}[h]
\includegraphics[alt={},max width=\textwidth]{bd6edbd4-1ec0-4c7e-bd39-b88f96bf52fb-3_746_608_758_1142} \captionsetup{labelformat=empty} \caption{Figure 3}
\end{figure} Figure 2 shows the possible allocations of six workers, Charlie (C), George (G), Jack (J), Nurry (N), Olivia (O) and Rachel (R), to six tasks, \(1,2,3,4,5\) and 6. Figure 3 shows an initial matching.
  1. Starting from this initial matching, use the maximum matching algorithm to find an improved matching. You should give the alternating path you use and list your improved matching.
  2. Explain why it is not possible to find a complete matching. After training, Charlie adds task 5 to his possible allocations.
  3. Taking the improved matching found in (a) as the new initial matching, use the maximum matching algorithm to find a complete matching. Give the alternating path you use and list your complete matching.