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QUESTION
Matrix
Use the coding matrix A= |1 -1 0| and its inverse A^-1=|0 1 2| |3 0 2| |-1 1 2| |-1 0 -1| |0 -1 -3| to write a cryptogram for the message S T A Y _ W E L L 19 20 1 25 0 23 5 12 12 USE |19 25 5| |20 0 12| |1 23 12|
