UGC NET Questions (Paper – 1)

A is correct because arranging data in a table helps track multiple attributes. B is true as Latin squares require each symbol exactly once per row and column. D is also correct since elimination based on clues is a standard approach to such puzzles. C is false because a standard Sudoku requires each number 1–9 exactly once in each row, column and each 3×3 sub-grid, and E is false as these puzzles frequently appear in reasoning sections. Thus A, B and D only are correct.

Option A:
Option A properly groups the three accurate statements about how grid puzzles are structured and solved, while rejecting C and E, both of which misdescribe Sudoku rules and exam usage. It matches the reasoning component of Unit 5.

Option B:
Option B includes C, which wrongly allows repetition within sub-grids, and therefore cannot be correct despite containing other true statements.

Option C:
Option C mistakenly contains E, which denies the presence of such puzzles in exams, and omits A, which explains the row–column organisation. This makes the option both erroneous and incomplete.

Option D:
Option D includes E and so inherits the error that these puzzles never appear in aptitude tests, even though it includes some correct ideas. As a result, it is an invalid combination.

Statements A, B, C and E are correct, whereas D and F are false. Diagrams and symbolic notations are widely recommended for arrangement problems because they externalise information and constraints. When a trial placement yields a contradiction, it signals that assumptions must be changed, and elimination is a powerful strategy when several possibilities exist. D is wrong because some puzzles may have multiple valid configurations, and F is wrong because disorganised reading usually makes problems harder, not easier. Hence A, B, C and E only is the correct combination.

Option A:
Option A is correct because it collects the main effective strategies for arrangement problems and excludes unrealistic claims about uniqueness and the effect of random reading. It reflects both reasoning principles and practical exam techniques. Therefore this option best represents the correct statements.

Option B:
Option B is incomplete since it omits E, the explicit mention of elimination as a useful tool. While A, B and C describe diagramming and revision, they leave out an important problem-solving technique. Thus A, B and C only cannot be accepted.

Option C:
Option C is wrong because it includes F, which wrongly asserts that random order reading has no impact on difficulty. In fact, organising conditions often simplifies reasoning. This option also omits A, removing an important recommendation about drawing diagrams.

Option D:
Option D is incorrect because it accepts F and omits B. Without B, the benefit of formalising clues is lost, and including F contradicts widely shared problem-solving advice. Therefore A, C, E and F only is not a valid answer.