Exercise: Letter Coding

Questions for: Letter Shifting (Forward/Backward)

If 'PENCIL' is coded as 'QCYNYF' based on a specific letter shifting pattern, how would 'TABLE' be coded using the same pattern?

A: UYEHJ
B: UCEPJ
C: UZCKF
D: SZAKD
Answer: A

✅ The coding pattern involves an alternating shift: the first letter shifts +1, the second shifts -2, the third shifts +3, the fourth shifts -4, and so on, with the shift magnitude increasing by one for each position.

For 'PENCIL': P(+1)=Q, E(-2)=C, N(+3)=Q, C(-4)=Y, I(+5)=N, L(-6)=F. This exactly matches the given coded word 'QCYNYF'.

Applying this same pattern to 'TABLE': T(+1)=U, A(-2)=Y, B(+3)=E, L(-4)=H, E(+5)=J. Therefore, 'TABLE' is coded as 'UYEHJ'.

❌ Option B (UCEPJ) would result from a consistent forward shift pattern of +1, +2, +3, +4, +5 for each letter, which contradicts the alternating forward/backward shifts shown in the example.

❌ Option C (UZCKF) would result from a simpler alternating +1, -1, +1, -1, +1 shift pattern, which does not match the increasing magnitude of shifts established by 'PENCIL' -> 'QCYNYF'.

❌ Option D (SZAKD) would result from a simple consistent backward shift of -1 for all letters, which is clearly not the complex pattern derived from the given example.

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