What should come in place of the question mark (?) in the following alphanumeric series: A1X, B4P, E25J, J100F, ?
- O289D
- P225D
- R289G
- S289E
The Correct Option is A
Solution and Explanation
Step 1: Observe the pattern in the letters and numbers:
- Letters at the beginning: A, B, E, J (these are increasing by positions in the alphabet: A → B → E → J)
- Numbers: 1, 4, 25, 100 (these are squares of 1, 2, 5, 10)
- Letters at the end: X, P, J, F (these are moving backwards in the alphabet with steps: X → P → J → F)
Step 2: Predict the next elements:
- The next letter in the sequence after J is O.
- The next number is 289, which is the square of 17.
- The next letter at the end is D (following the reverse alphabet pattern).
Thus, the missing term is O289D.
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