AQA D1 2008 June — Question 1

Exam BoardAQA
ModuleD1 (Decision Mathematics 1)
Year2008
SessionJune
TopicPermutations & Arrangements
TypeAssignment/allocation matching problems

1 Six people, \(A , B , C , D , E\) and \(F\), are to be matched to six tasks, \(1,2,3,4,5\) and 6 .
The following adjacency matrix shows the possible matching of people to tasks.
Task 1Task 2Task 3Task 4Task 5Task 6
\(\boldsymbol { A }\)001011
B010100
\(\boldsymbol { C }\)010001
\(\boldsymbol { D }\)000100
\(E\)101010
\(\boldsymbol { F }\)000110
  1. Show this information on a bipartite graph.
  2. Initially, \(A\) is matched to task 3, \(B\) to task 4, \(C\) to task 2 and \(E\) to task 5. From this initial matching, use the maximum matching algorithm to obtain a complete matching. List your complete matching.