Identify the odd one out among the following alphanumeric combinations.
2024
Identify the odd one out among the following alphanumeric combinations.
Answer: B. AD3 — In each alphanumeric combination, two letters are followed by a number. A combination follows the standard pattern when the sum of the two letters' positions…
- A.
IJ19
- B.
AD3
- C.
DE9
- D.
CD7
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Correct answer: B
In each alphanumeric combination, two letters are followed by a number. A combination follows the standard pattern when the sum of the two letters' positions in the English alphabet (A = 1, B = 2, …, Z = 26) equals the printed number. The odd one out is the single combination whose position-sum does not equal its printed number.
Combination | Letter positions | Position sum | Printed number | Follows pattern? |
|---|---|---|---|---|
IJ19 | I = 9, J = 10 | 19 | 19 | Yes |
AD3 | A = 1, D = 4 | 5 | 3 | No |
DE9 | D = 4, E = 5 | 9 | 9 | Yes |
CD7 | C = 3, D = 4 | 7 | 7 | Yes |
Three of the four combinations show a position sum equal to the printed number; only one combination breaks this rule, confirming it as the odd one out.