In question, a series of figures are given which can be grouped into classes. Select the group into which the figures can be classified from the given responses.

• 1 2 4 3 5 6 8 7 9
• 9 7 6 5 3 1 4 8 2
• 2 3 4 7 6 5 9 8 1
• 1 4 7 2 6 9 3 5 8