Question

What should come in place of the question mark (?) in the following alphanumeric series: A1X, B4P, E25J, J100F, ?

• A. O289D
• B. P225D
• C. R289G
• D. S289E

Answer 1

The Correct Option is A

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.