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Choose the odd one out from the following: (A) 123 (B) 246 (C) 369 (D) 482
123
246
369
482
482
Check the relationship between digits: in each option, observe if the second and third digits are consecutive multiples of the first digit.
Check the relationship between digits: in each option, observe if the second and third digits are consecutive multiples of the first digit.
Analyze the pattern of each number
Break down each number into digits. For 123: 1, 1x2=2, 1x3=3. For 246: 2, 2x2=4, 2x3=6. For 369: 3, 3x2=6, 3x3=9.
Verify the anomaly in the final option
For 482: 4, 4x2=8, but 4x3=12. Since 12 is a two-digit number, the pattern breaks because the third digit provided is 2, not 12.
A: 123 follows the pattern (x, x2, x3), B: 246 follows the pattern (x, x2, x3), C: 369 follows the pattern (x, x2, x3).
D is correct because 482 does not follow the multiplication pattern (first digit x 2 = second digit, first digit x 3 = third digit) observed in the other options.
In number classification, always test for arithmetic progression, common multipliers, or sum-of-digits logic before checking squares or cubes.
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