Logic puzzle with skirts and blouses

Question

Five girls wearing skirts and blouses in two different colors. Using the information below, you should be able to determine which colors the five had on their clothes. The girls are Anne, Grete, Marit, Stine and Vibeke. The current colors are black, blue, green, red and yellow.

1. Anne's skirt has the same color as Marit's blouse. 

2. Marit’s skirt is red, and Stine's blouse is blue. 

3. Stine’s skirt is the same color as Vibeke's blouse.

4. The girl with black skirt has a blouse of the same color as the skirt of the girl wearing a black blouse.

5. Grete is wearing a green blouse.

TASK: Decide who has what color of the skirt and the blouse.

Answer 1

From clues 1, 2, 3, and 5 we can derive the following table

Blouse: green X blue Y

Skirt: X red Y

Anne Grete Marit Stine Vibeke

Clue 4 tells us:

The girl with black skirt has a blouse of the same color as the skirt of the girl wearing a black blouse.

If we take X = black, we get

Blouse: red green black blue Y

Skirt: black red Y

Anne Grete Marit Stine Vibeke

We can now fill the gaps anyway we want without violating any constraint. One possible solution would be

Blouse: red green black blue yellow

Skirt: black red red yellow red

Anne Grete Marit Stine Vibeke

There can be other combinations as well.