Logical Reasoning
Question types
Expect series completion (number, letter, figure), analogies, classification (odd-one-out), coding-decoding, blood relations, direction sense, ranking and ordering, syllogisms, and simple puzzles.
Methods that work
For number series, check differences, then ratios, then alternating patterns; for letter series, convert letters to positions (A=1 … Z=26) and look at gaps. In coding-decoding, find the shift or reversal rule before applying it. For blood relations, draw a family tree with gender markers. For direction sense, sketch a rough map and track net displacement. For syllogisms, use Venn diagrams and only accept conclusions that follow necessarily from the premises. For ranking, write positions on a line rather than juggling mentally.
Traps
Assuming a conclusion is true because it is plausible in real life; ignoring 'some' vs 'all' in syllogisms; missing that a series alternates between two patterns; and forgetting that 'left' and 'right' depend on the direction the person faces. In puzzles, options may satisfy most clues but violate one - check every clue.
Worked example
A is B's sister, B is C's father, C is D's son. How is A related to D? B is C's father, so C is B's child. D is C's son, so D is B's grandchild. A is B's sister, so A is D's great-aunt (or grand-aunt). Rule of thumb: build the tree step by step and mark gender before answering.
Practice habit
Time each set at 60–90 seconds per item; skip and return rather than stalling.