How to Solve Classification Problems
In "distribution of three values," three kinds of elements each appear exactly once in every row and column. Learn how to spot Latin-square-style classification rules.
Solving tips
- Check whether the same three kinds of elements (shape/fill) each appear once per row.
- The same holds for each column: three kinds, once each. The answer is the element that is "missing" from both the row and the column.
- Identify which attribute is being distributed—shape, fill (white/gray/black), orientation, and so on.
Worked examples
Example 1：Each row and column contains ○, △, and □ once each. What is missing in the bottom-right cell?
Options
A
B ✓
C
D
Answer：B
The bottom-right cell is the intersection of the third row (which already has ○ and □) and the third column (which already has ○ and □). Eliminating from either the row or the column, the missing element is △ in both cases. × never appears on the board, so it is an unrelated symbol and a wrong answer.
This is the Classification domain of the IQ test
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