Question 7
A car park has four sections: A only for people with disabilities, B only for teachers, C only for parents, and D for everyone. A person may qualify for several sections; for example a parent can use C or D. Initially A,B,C,D have 3,1,3,2 empty spaces. Five cars arrive in order: teacher 1 (with a disability), teacher 2, teacher 3, parent 1, parent 2. Nobody leaves. Four proposed remaining-capacity rows are shown.
In English, “Khả năng” means possibility; the rows for A,B,C,D are (2,1,0,1), (2,1,1,0), (3,0,1,0), (3,0,0,1). How many possibilities can occur?
In English, “Khả năng” means possibility; the rows for A,B,C,D are (2,1,0,1), (2,1,1,0), (3,0,1,0), (3,0,0,1). How many possibilities can occur?