Question

Group the following figures into three classes on the basic of identical properties.

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

Answer 1

The correct option is D 1, 8, 9; 4, 6, 7; 2, 3, 5

1, 8, 9 are figures bisected by a straight line
4, 6, 7 are figures having an extended arm
2, 3, 5 are figures intersected by a line.
Thus the given figure containing nine figures may be divided into three pairs: (1, 8, 9), (4, 6, 7) and (2, 3, 5).
Hence the answer is (4).