1. 

Group the given figures into different classes on the basis of their orientation, shape etc.

grouping-of-figures-non-verbal-reasoning-introduction---grouping-of-figures-problems
A. (1, 5, 7), (2, 4, 6), (3, 9, 8)
B. (1, 5, 7), (2, 4, 8), (3, 6, 9)
C. (1, 5, 7), (4, 8, 9), (2, 3, 6)
D. (1, 5, 7), (3, 8, 9), (2, 4, 6)

Answer: Option B

Explanation:

1, 5 and 7 are composed of two similar figures, one inside the other.
2, 4 and 8 contain a figure placed inside a different figure 3, 6 and 9 are figures with thick boundaries.