Grouping Items
Classification & Analogy: Grouping Items
Grouping Items
Grouping Items
What you will learn
- How to identify the shared property of a group of items.
- How to test new items and decide whether they fit into the same group.
- Applying grouping to both words (categories) and numbers (multiples, even numbers, divisibility).
Key concepts
Level 1 — Word categories
Verbal: Look at the given words, name their shared category, then check which new word matches that category.
Example: Apple, Mango, Banana are fruits -> Orange also fits (fruit); Carrot does not (vegetable).
Level 2 — Multiples
Verbal: If given numbers are all multiples of a number k, check new numbers by dividing by k.
Example: 6, 9, 12 are multiples of 3 -> 15 is also a multiple of 3 (15 / 3 = 5).
Level 3 — Combined number properties
Verbal: A group may need TWO conditions at once, such as divisible by both 2 and 3 (that is, divisible by 6).
Worked example
Dog, Cat, Cow belong to the same group. Which word also belongs? (Horse, Sparrow, Crow)
Step 1 - Dog, Cat, Cow are common land animals kept by people
Step 2 - Horse is also a common land animal; Sparrow and Crow are birds
Answer: Horse
12, 18, 24 are all divisible by 6. Which of these is also divisible by 6: 20, 30, 25?
Step 1 - Check each option by dividing by 6
Step 2 - 30 / 6 = 5 exactly; 20/6 and 25/6 leave a remainder
Answer: 30
Common mistakes
| Mistake | Why it happens | Fix |
|---|---|---|
| Not naming the category first | Guessing directly | State the shared property before checking options |
| Checking only one condition | Missing a second required property | For combined rules, test BOTH conditions |
| Confusing 'belongs to group' with 'looks similar' | Surface-level matching | Match by meaning or property, not appearance |
| Division mistakes | Rushing arithmetic | Recheck the division before deciding |
Quick check
- Rice, Wheat, Maize are food grains. Does Rose belong to this group?
- 4, 8, 12 are even numbers. Is 15 even?
- Which number also fits with 10, 20, 30 (multiples of 10): 25 or 40?
- Stretch: Which of 14, 21, 9 is divisible by both 3 and 7?
Revision tip: Always say the group's rule as a full sentence before testing new items.
Open the Practice tab for graded questions on Grouping Items.
Key Takeaways (TL;DR)
- What you will learn
- Key concepts
- Worked example
- Common mistakes
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