Question: An encryption function is provided by an affine cipher f:XX, f(x)(9x+5) mod 19 X={ 0,1,2,.......18}. Find the encryption of x=13.

An encryption function is provided by an affine cipher

f:XX, f(x)(9x+5) mod 19 X={ 0,1,2,.......18}.

Find the encryption of x=13.

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