Q219
What is the formula used for decoding the ciphered text using affine cipher(a,b are constants and x is the numerical equivalent of a letter to be encrypted)?
A.
a-1(x-b)%26
AnswerB.
(ax+b)%26
C.
b-1(x-a)%26
D.
b-1(x-a)
Answer: Option A
Solution
Answer: Option A
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