Question 2
A family consisting of a father, mother, older sister and younger brother prepares breakfast for the next day in four stacked boxes, each containing one kind of fruit.
In the morning, each person takes the top box and carries it to work.
The mother always wakes up first and the father last. Their preferences are shown below, where 0 means dislike and 1 means like.
| | Apple | Banana | Orange | Watermelon |
| --- | --- | --- | --- | --- |
| Father | 0 | 0 | 1 | 0 |
| Mother | 1 | 0 | 1 | 1 |
| Older sister | 1 | 1 | 1 | 0 |
| Younger brother | 1 | 1 | 0 | 1 |
Which arrangement below guarantees that all four people get a box of fruit they like?
In the morning, each person takes the top box and carries it to work.
The mother always wakes up first and the father last. Their preferences are shown below, where 0 means dislike and 1 means like.
| | Apple | Banana | Orange | Watermelon |
| --- | --- | --- | --- | --- |
| Father | 0 | 0 | 1 | 0 |
| Mother | 1 | 0 | 1 | 1 |
| Older sister | 1 | 1 | 1 | 0 |
| Younger brother | 1 | 1 | 0 | 1 |
Which arrangement below guarantees that all four people get a box of fruit they like?
Top to bottom: Apple → Watermelon → Banana → Orange.
Top to bottom: Watermelon → Apple → Banana → Orange.
Top to bottom: Banana → Watermelon → Apple → Orange.
Top to bottom: Apple → Watermelon → Orange → Banana.