What should come in the place of the question mark (?) in the following alphanumeric series?

A1X, B4P, E25J, J100F, ?

Question

What should come in the place of the question mark (?) in the following alphanumeric series?

A1X, B4P, E25J, J100F, ?

Accepted Answer

The given series follows a systematic pattern for both letters and numbers:

1. **Letters:**  
   - The first letter follows the sequence: A → B → E → J → Q.  
   - This progression corresponds to skipping 0, 1, 2, and 3 letters in the alphabet (A +0 = A, A +1 = B, B +4 = E, E +5 = J, J +6 = Q).

2. **Numbers:**  
   - The numbers are squares of consecutive integers: $$1^2 = 1$$, $$2^2 = 4$$, $$5^2 = 25$$, $$10^2 = 100$$, $$17^2 = 289$$.

3. **Last Letter:**  
   - The last letter moves backward in the alphabet by 8 positions: X → P → J → F → D.

Thus, the next element in the series is **Q289D**.

Answer

Answer

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