If "LOFTY" is coded as "LPFUY" by keeping letters at odd positions unchanged and shifting letters at even positions forward by 1 (O->P, T->U), then how will "DWARF" be written?
Verbal Reasoning
Coding Decoding
Difficulty: Medium
Choose an option
Answer
Correct Answer: DXASF
Explanation
Introduction / Context:This positional coding rule alters only the even-indexed characters by a +1 shift while leaving odd-indexed characters unchanged. "LOFTY" -> "LPFUY" demonstrates this pattern.
Given Data / Assumptions:
- Positions counted from 1 on the left.
- Odd positions unchanged; even positions shift forward by 1.
- Alphabet wraps after Z if required.
Concept / Approach:Apply the rule per position to "DWARF".
Step-by-Step Solution:1 D (odd) -> D2 W (even) -> X3 A (odd) -> A4 R (even) -> S5 F (odd) -> FThus, code = DXASF.
Verification / Alternative check:Check "LOFTY": L stays, O->P, F stays, T->U, Y stays, giving LPFUY as provided.
Why Other Options Are Wrong:
- DXBSG / DXATF / DWBSG: these modify odd positions or apply mismatched shifts to even positions.
- None of these: Not applicable since DXASF is valid.
Common Pitfalls:Starting index from 0, or applying the shift to all letters rather than only even positions.
Final Answer:DXASF