A code is ‘arrangement of signs’. Accordingly, coding is a process for transmitting a message between the sender and the recipient without a third individual knowing it.
The coding and decoding test is set up to judge the candidate’s capacity to interpret the rule that codes a specific word/message and break the code to interpret the word. The article Coding - Decoding presents the important questions related coding and decoding topic.
Coding and decoding are divided into eight types. They are: 1. Letter coding 2. Direct letter coding 3. Number/Symbol coding 4. Matrix coding 5. Substitution coding 6. Deciphering message word coding 7. Deciphering number and symbol codes for messages 8. Jumbled coding
Some times, there is a chance of asking twisted questions in the coding - decoding sections. Daily practice and time management is required to answer the questions related to coding and decoding. Mostly, coding - decoding questions may be related to coded language (or) message format.

In a certain code 'HILTON' is written as 'IHTLNO'. How is 'BILLION' written i that code ?

A. IBLLION B. IBOILLN C. IBLLOIN D. IBLOILN