Solutions of Questions 4 and 5 require paraphrasing and applying multiplication principle. Similar problems were discussed during the in-service course; all the solutions submitted for this question were mathematically correct except for two scripts with some careless computation but were otherwise conceptually correct. A fairly high percentage (70.4% for Question 4 and 66.7% for Question 5) still classified these questions as non-routine problems within the syllabus. The solutions were mainly correct, except for three careless calculations for Question 4 and one careless consideration for Question 5.