Classification
Classification questions in Non-Verbal Reasoning test your ability to identify patterns and differences among a group of figures. You are typically presented with 4–5 images, and your task is to determine which one does not belong to the group or to classify the figures based on a common property.
These questions measure your skill in spotting similarities and distinguishing features in visual data.
Types of Classification
| Type | Description | Example |
|---|---|---|
| Shape-Based | One figure is a different geometric shape from the others. | Four circles and one square → square is odd one out. |
| Rotation/Orientation-Based | One figure’s orientation is inconsistent with the others. | Three arrows pointing up, one pointing down → the downward arrow is odd. |
| Size/Scaling-Based | One figure differs in relative size compared to the others. | Three small shapes and one large shape. |
| Shading/Fill-Based | One figure is shaded differently (filled/empty, light/dark). | Three white triangles, one black triangle. |
| Number/Count-Based | Figures differ in the number of parts, lines, or dots. | Three pentagons, one hexagon. |
| Position-Based | One figure appears in a different location or alignment. | Three centered shapes, one shifted to the corner. |
| Combination-Based | Multiple changes (e.g., rotation + shading + size) create the odd figure. | Three shapes rotated consistently and shaded the same, but one differs in both. |
How to Solve Classification Questions
- Scan quickly for obvious differences: Check shape, count, and shading first.
- Compare systematically: If no simple oddity is seen, check orientation or position.
- Look for uniformity: Often, four follow a clear rule and one violates it.
- Confirm with elimination: Ensure the chosen odd figure is the only one inconsistent.
Conceptual Tips and Common Mistakes
- Don’t overthink: Usually only one attribute differs clearly.
- Avoid external knowledge: Focus on the figures given, not real-world meaning.
- Check subtle features: Line thickness, symmetry, or hidden dots may define the rule.
- Be careful with symmetry: Some figures may look different but follow the same property (e.g., mirror shapes can still belong).
Examples
Example 1 — Shape-Based
Figures: ●, ●, ●, ■
Rule: All are circles except one square.
Answer: ■ is odd.
Example 2 — Orientation-Based
Figures: ↑, ↑, ↑, ↓
Rule: Three arrows point upward, one points downward.
Answer: ↓ is odd.
Example 3 — Shading-Based
Figures: □, □, □, ■
Rule: Three are unshaded squares, one is filled.
Answer: ■ is odd.
Example 4 — Number-Based
Figures: ▲ (triangle), ▲ (triangle), ▲ (triangle), ⬠ (pentagon)
Rule: Three have 3 sides, one has 5 sides.
Answer: Pentagon is odd.