In each option below, a group of letters is presented as three four-letter…
2021
In each option below, a group of letters is presented as three four-letter terms. Within a genuinely valid group, the letters at each of the four positions (1st, 2nd, 3rd, and 4th) shift forward by the SAME fixed number of alphabet places from the first term to the second, and again by that same fixed number from the second term to the third. From the four alternatives, select the one group of letters that follows this Logic/Rule/Relation consistently.
Answer: B. (KQRN, QXZW, WEHF) — Concept: In this letter-series analogy question, each option presents a group of letters as three four-letter terms. Within a genuinely valid group, the rule…
- A.
(AJNP, GQVY, MXEH)
- B.
(KQRN, QXZW, WEHF)
- C.
(LPCR, RWKZ, XDSI)
- D.
(TGPA, ZNXJ, EUFS)
Attempted by 63 students.
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Correct answer: B
Concept: In this letter-series analogy question, each option presents a group of letters as three four-letter terms. Within a genuinely valid group, the rule holds position-wise across the group's two transitions (first term to second term, second term to third term): the 1st letters must shift forward by one fixed number of alphabet places in both transitions, the 2nd letters by another fixed number, the 3rd by another, and the 4th by another. A group satisfies the rule only when every one of these four position-wise shifts stays IDENTICAL across both transitions; if even one position's shift size changes between the two transitions, that group fails the rule.
Application: Testing the group (KQRN, QXZW, WEHF):
First letter: K to Q is a shift of +6; Q to W is also +6 — the shift stays constant.
Second letter: Q to X is a shift of +7; X to E is also +7 — the shift stays constant.
Third letter: R to Z is a shift of +8; Z to H is also +8 — the shift stays constant.
Fourth letter: N to W is a shift of +9; W to F is also +9 — the shift stays constant.
Cross-check: In the group (AJNP, GQVY, MXEH), the third letter shifts by +8 from N to V but then by +9 from V to E — the shift size changes between the two transitions, so that group does not qualify. Only a group where every one of the four position-wise shifts stays fixed across both transitions satisfies the rule.
Final Answer: (KQRN, QXZW, WEHF).