Answer
The cryptogram is a method used to encode and decode a message.
Work Step by Step
A cryptogram is a method used to encode and decode a message with the help of the alphabet and an "algorithm". It is a type of puzzle that codes the message or data into the number form.
As an example, the letter $ A $ is coded with 1 -- that is $ A=1$.
Matrices can be used to encode/decode simple cryptograms.
