Code is related to secret language, system of sign, secret writing etc. Codes are used to communicate secretly. But in competitive examination question related to coding and decoding are asked just to test the logical ability of the candidate.
Types of coding:
There are no specific types of coding, But in competitive examination question related to the coding and decoding are can be categorised as
Letter coding
Letter and number coding
Mix coding.
Letter coding
IN letter coding codes are written in alphabet in logical way. In competitive exam questions you will ask to code or decode the word or statement given.
Question on coding and decoding.
1. Example
If BASE is coded as CBTF. How will you code the word ACID?
Soution:
This is the simple question. Here the word BASE is coded is CBTF. And we asked to code for ACID. For solving this question we have to identify the relation between letters of BASE and CBTF.
For more
http://etestprep.blogspot.com/2014/05/here-example-no1-if-mobile-is-coded-as.html