Reasoning Ability: Converting Clues into Fixed Structures
Reasoning Ability in the UIIC Assistant paper tests how fast you can turn verbal clues into a settled structure. Nearly every question comes from a small family of types: puzzles and seating arrangements, syllogism, inequality, coding-decoding, blood relations, direction sense, alphanumeric series and data sufficiency.
Seating and puzzles
Treat each puzzle as a table you build clue by clue. Find the one clue that fixes a person's position absolutely, then attach relative clues to it. When a row faces south, or a circular arrangement faces outward, every left/right instruction reverses. For floor, box and month-scheduling puzzles, list the slots vertically first and fill the definite ones.
Syllogism and inequality
Draw Venn diagrams for the statements and test each conclusion against every possible diagram, including the possibility case. 'Some A are B' does not permit 'All A are B', and 'No A is B' with 'Some B are C' yields no firm link between A and C. In inequality chains, keep the chain unbroken; a symbol flips only when the entire statement is reversed.
Coding, relations and direction
Memorise A=1 to Z=26, the EJOTY anchors (E=5, J=10, O=15, T=20, Y=25) and the fact that opposite letters sum to 27. In blood-relation questions draw a tree and mark gender on every node before answering. In direction sense, sketch the path and remember that a left turn after facing south points east.
Worked example
In a row of persons all facing north, A is 12th from the left, B is 18th from the right, and exactly five persons stand between them. A sits at place 12 from the left, so the five persons occupy places 13 to 17, putting B at place 18 from the left. Total persons = 18 + 18 - 1 = 35.
Traps
Spending more than about 90 seconds on one puzzle; ignoring facing direction; accepting a conclusion drawn from a single diagram; and re-reading the whole puzzle for each sub-question instead of reusing your table.