Direction In each of the following questions, group the given figures into three classes using each figure only once. -
6.

 A. 1,5,7 ; 2,4,6 ; 3,9,8 B. 1,5,7 ; 2,4,8 ; 3,6,9 C. 1,4,7 ; 2,5,8 ; 3,6,9 D. 1,7,9 ; 3,5,8 ; 2,4,6
Explanation:

1, 5, 7 have two similar elements, one inside the other.

2, 4, 8 have one element placed inside a different element.

3, 6, 9 have two similar elements, one inside the other and the area between the two elements is shaded.

7.

 A. 1,2,6 ; 3,4,7 ; 5 B. 1,3 ; 2,6 ; 4,5,7 C. 1,2,6,7 ; 3 ; 4,5 D. 1,3 ; 2,4,5 ; 6,7
Explanation:

1, 3 contain a V-shaped element inside a geometrical figure.

2, 4, 5 contain two similar elements, one placed inside the other and touching it.

6, 7 contain geometrical figures which are divided into four equal parts by two mutually perpendicular straight lines.

8.

 A. 1,2,5 ; 3,7,8 ; 4,6,9 B. 1,7,2 ; 3,9,6 ; 4,5,8 C. 2,3,8 ; 4,6,9 ; 1,5,7 D. 5,6,9 ; 3,4,1 ; 2,7,8
Explanation:

1, 2, 5 are figures that have patterns formed from four lines curved in a concave direction.

3, 7, 8 are figures that have patterns formed from four lines curved in a convex direction.

4, 6, 9 are figures that have patterns formed from these straight lines.

9.

 A. 2,4,7 ; 1,8,9 ; 3,5,6 B. 2,6,9 ; 1,5,7 ; 3,4,8 C. 2,6,7 ; 1,5,8 ; 3,4,9 D. 2,8,7 ; 1,5,9 ; 3,4,6
Explanation:

1, 5, 7 contain a rectangle with its two diagonals as the outer element and another element (similar or different) placed inside it.

2, 6, 9 contain a triangle with its three medians as the outer element and another element (similar or different) placed inside it

3, 4, 8 contain a circle with its two mutually perpendicular diameters as the outer element and another element (similar or different) placed inside it.

10.

 A. 1,3,5 ; 2,6,9 ; 4,7,8 B. 2,3,4 ; 5,6,8 ; 9,1,7 C. 1,3,5 ; 2,6,8 ; 4,7,9 D. 3,2,4 ; 6,5,8 ; 7,9,1