358. On the street, four girls - Anya, Vanya, Galina, and Nina - are standing in a circle, talking. The girl in the green dress (not Anya and not Vanya) is standing between the girl in the blue dress and Nina. The girl in the white dress is standing between the girl in the pink dress and Vanya. What dress is each of the girls wearing?
$\triangle$ This problem is similar to the correspondence problems between two sets that we considered in § 2-3.

Let's make a drawing (Fig. 42). Denote the girls in green and blue dresses, as well as Nina, with points.

Since the girl in the green dress is not Anya, not Vanya, and not Nina, her name is Galya.

The girl in the white dress cannot be Nina; moreover, she cannot be either Vanya or Galya. Therefore, she is Anya.

The rest is now easily restored.

Answer: Anya - in the white dress, Vanya - in the blue dress, Galya - in the green dress, Nina - in the pink dress.

![](https://cdn.mathpix.com/cropped/2024_05_21_0aa0e6ac168e80891953g-111.jpg?height=597&width=1338&top_left_y=1780&top_left_x=356)

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