The approach to solve the questions of this section? Observe alphabets or numbers given in the code keenly. Find the sequence it follows whether it is ascending or descending. Detect the rule in which the alphabets/numbers/words follow. Fill the appropriate letter/number/word in the blank given. Some Basics which we need to learn before solving the questions of this topic are: Letter position (A=1, B=2, C=3, D=4 …… Y=25, Z=26) Opposite position of letters (A=26, B=25 …… Z=1) Opposite of each letter (A is opposite to Z and B is opposite to Y and C is opposite to X …… and so on) Various types on which Coding and Decoding are classified are (as per Bank Exams): Letter Coding Substitution Mixed Letter Coding Mixed Number Coding LETTER CODING: In this type the real alphabets in a word are replaced by certain other alphabets according to a specific rule to form its code. The candidate is required to detect the common rule and answer the questions acc...