General Studies · Classification
In the following number-pairs, the second number is obtained by applying a certain mathematical operation to the first number. Three of the four pairs follow the same pattern and form a group. Select the number-pair that does NOT belong to this group. (NOTE: Operations should be performed on whole numbers, without breaking down the digits.)
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 122-242
- 218-198
- 331-341
- 413-144✓
Correct answer
13-144
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