General Intelligence · Classification
In each of the number-pairs, the second number is obtained by performing a certain mathematical operation on the first number. Three of the following pairs follow the same pattern and thus form a group. Select the number-pair that does NOT belong to that group.
- 115 ∶ 208✓
- 217 ∶ 272
- 325 ∶ 600
- 421 ∶ 420
Correct answer
15 ∶ 208
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