Problem number 15. We make a line of pictures by repeating these five pictures, always in the same order. Which picture is in the 27th position in the line? The sun, the ghost, the cat, the moon, or the flame? Let's start numbering the pictures in the pattern. We have the sun first, then the ghost, then the cat, then the moon, then the flame. Then we, as the sixth position, we have the sun, then the ghost, so we can number those. Then we can keep numbering. And with the pictures we have here, we get up to 15, but we know that the sun will be next. So we can continue going, and I'm just going to write the numbers underneath. 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25. Then the sun is 26, and 27 is the ghost. As we were numbering, we could have also noticed that all the numbers that end with a given digit are the same picture. So the ghost is in the seventh position, and it will be in the 17th position, and the 27th. And there are a few other ways to solve this problem, but the answer is B.

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