Coding and decoding patterns – UGC NET Question

Statements A, B, D and E correctly describe typical features of coding–decoding items, while C and F are false. Letter and number coding often rely on systematic shifts or assignments, and reversing the order of letters is a common twist. These questions mainly test the ability to detect and apply patterns, not domain-specific facts. C is wrong because patterns must be applied consistently once discovered, and F is wrong because many items deliberately mix letter and number coding. Therefore A, B, D and E only is the correct combination.

Option A:
Option A is incomplete since it omits E, failing to highlight that the real goal is pattern recognition rather than subject knowledge. While A, B and D are true, they do not fully capture what the questions are measuring. Thus this option is not fully accurate.

Option B:
Option B is correct because it gathers all the true statements about how such questions are constructed and why they are used. It excludes C and F, both of which contradict the basic idea of a systematic pattern. This makes the option consistent with actual exam practice.

Option C:
Option C is wrong because it accepts F, claiming that mixed patterns are impossible, even though many test items use exactly that device. It also omits A, removing a straightforward description of letter coding. The combination therefore cannot be right.

Option D:
Option D is incorrect since it includes C, suggesting that patterns should be applied inconsistently, which would destroy the logic of coding questions. Although it mentions E, the presence of C makes the option invalid as a set of correct statements.