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, 2, 5), (3, 7, 8), (4, 6, 9)
B. (1, 2, 7), (3, 6, 9), (4, 5, 8)
C. (2, 3, 8), (4, 6, 9), (1, 5, 7)
D. (5, 6, 9), (1, 3, 4), (2, 7, 8)

Answer: Option A

Explanation:

1, 2 and 5 contain similar pattern enclosed inside different figures.
3, 7 and 8 contain similar pattern (different form that in 1, 2 and 5) enclosed inside different figures.
4, 6 and 9 are figures enclosing a triangle with one median.