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Zorluk: OrtaCoding and Decoding

A biomedical research facility tags its genetic samples using a specialized alphabetical encryption logic to maintain anonymity. In this system, the word PLASMA is coded as LPAIOA and the word SERUM is coded as IWJGO. Based on this specific coding logic, how will the word VIRUS be coded?

  1. FSJGICevap
  2. B
    WJSVT
  3. C
    ERIFH
  4. D
    DQHEG

Cevap

The correct sequence is FSJGI.
The established coding rule dictates that each letter is first replaced by its reverse alphabetical counterpart (e.g., A becomes Z, B becomes Y), and then shifted forward by one letter (+1). Applying this to VIRUS: V becomes E (+1 = F), I becomes R (+1 = S), R becomes I (+1 = J), U becomes F (+1 = G), and S becomes H (+1 = I), yielding FSJGI.

Adım Adım Çözüm

1
Analyze the transformation applied to the word PLASMA to produce LPAIOA.
P(16) reverses to K(11), K+1 = L. L(12) reverses to O(15), O+1 = P. A(1) reverses to Z(26), Z+1 = A. S(19) reverses to H(8), H+1 = I. M(13) reverses to N(14), N+1 = O. A(1) reverses to Z(26), Z+1 = A.
To decode the underlying multi-step logic by testing position values and reverse alphabet mappings.
2
Verify the identified rule (Reverse Letter + 1) using the second example, SERUM.
S reverses to H, H+1 = I. E reverses to V, V+1 = W. R reverses to I, I+1 = J. U reverses to F, F+1 = G. M reverses to N, N+1 = O. The result IWJGO matches the given code.
To confirm the encryption rule is consistent and completely understood before applying it to the target word.
3
Apply the verified two-step rule to the target word VIRUS.
V reverses to E, E+1 = F. I reverses to R, R+1 = S. R reverses to I, I+1 = J. U reverses to F, F+1 = G. S reverses to H, H+1 = I.
To determine the final encrypted tag for the target sample.

Anahtar Kavram

Multi-step letter coding involving reverse alphabetical indexing and positional shifts.
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Konular

Coding and Decoding

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