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Can anyone please solve this and explain it ?. Cryptography uses residue matrices: matrices where all elements are in Zn. A residue matrix has a

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Can anyone please solve this and explain it ?.

Cryptography uses residue matrices: matrices where all elements are in Zn. A residue matrix has a multiplicative inverse if ged (det(A),n)=1. mod26 Figure 2.26 A residue matrix and its multiplicative inverse A=3161354357794221716A1=15231524219167001815152233det(A)=21det(A1)=5

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