In the following question, group the given figures into three classes using…
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In the following question, group the given figures into three classes using each figure only once.
Group the given figures into three classes using each figure only once.
- 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
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Show answer & explanation
Correct answer: B
Answer: 2,6,9 ; 1,5,7 ; 3,4,8
Explanation:
Class 1 — Figures 2, 6, 9: Triangle with three medians as the outer element. The inner element varies, but the common outer structure (triangle + medians) is the classification criterion.
Class 2 — Figures 1, 5, 7: Rectangle/square with both diagonals as the outer element. The shapes placed inside may differ, but the outer rectangular frame with diagonals is common to these figures.
Class 3 — Figures 3, 4, 8: Circle with two mutually perpendicular diameters as the outer element. These figures share the circular outer structure; inner elements may be similar or different.
Key insight: Group by the outer, dominant geometric frame (triangle with medians, rectangle with diagonals, or circle with perpendicular diameters). Variations inside that outer frame do not change the class.