While choosing the value of a and m (m is the no. of alphabets) in aff – McqOptions

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1.	While choosing the value of a and m (m is the no. of alphabets) in affine cipher it must be ensured that?
A.	a and m are prime numbers
B.	a and m are odd numbers
C.	a and m are coprime
D.	a and m are even numbers
Answer» D. a and m are even numbers

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