Reasoning Ability
Reasoning Ability
This section rewards pattern recognition more than calculation: puzzles and seating arrangements (linear, circular, floor-based, box-based), syllogism, inequality, coding-decoding, blood relations, direction sense, alphanumeric series and order-ranking.
Building blocks
- Puzzles: draw the frame before reading the clues - number the seats or floors - then convert each clue into a fixed slot or an "either-or" pair. Place definite clues first and keep two or three possible arrangements as branches instead of guessing.
- Syllogism: use Venn diagrams. A conclusion is valid only if it holds in every possible diagram. "Some A are B" does not give "Some B are not A".
- Inequality: read the chain symbol by symbol. A > B ≥ C gives A > C; A ≥ B ≥ C gives only A ≥ C.
- Coding-decoding: compare letters position by position across the words, not word by word.
Worked example
Statements: All pens are books. Some books are red. Conclusion: Some pens are red. Reasoning: the red books may lie entirely outside the pen set, so the conclusion is not forced in every diagram and must be rejected. It would be valid only if the second statement were "All books are red".
Traps that cost marks
In syllogism, "some" includes the possibility of "all" - never read it as "some but not all". In circular arrangements, confirm whether people face the centre or outside before deciding left and right; the two directions mirror each other. Do not sink eight minutes into one puzzle: if the branches multiply past three, move on and return.