ALPHANUMERIC SEQUENCE PUZZLE

ALPHANUMERIC

SEQUENCE PUZZLE :

1. Alphanumeric is a combination of alphabetic and numeric characters. In some cases, it may include upper and lower case letters, punctuation marks, and symbols (such as @,&, and *,).


2. Few keywords that are generally used in such questions like "following, followed by, preceding, and preceded by".


3. Let us take two successive alphabets Y and Z. Here, Y is preceding Z and Z is preceded by Y. Also, Z is following Y and Y is 
followed by z.

4. Now, take three successive alphabets X, Y, and Z. Here X and Y are preceding Z, but Y is immediately preceding Z whereas, X is not immediately preceding Z. Similarly, Y and Z are following X, but Y is immediately following X whereas, Z is not immediately
following X.