Analytical Ability
Analytical Ability
ATMA's Analytical Ability section tests structured reasoning: arrangements, puzzles, syllogisms, blood relations, coding-decoding, number series, data sufficiency, and critical reasoning. The exam rewards candidates who translate words into constraints and eliminate impossible options.
Core rules
- For seating or scheduling puzzles, draw positions and write every condition as a constraint. Start with the most restrictive clue, such as a fixed end seat or a direct immediate-left relation.
- In syllogisms, use Venn diagrams. 'All A are B' does not convert to 'All B are A'; 'Some A are B' does not imply 'Some A are not B.'
- For blood relations, draw a family tree and mark gender only when stated. Do not assume gender from a name or role.
- In coding-decoding, test letter positions, reversals, and shifts separately; one consistent rule must explain every pair.
- In data sufficiency, decide whether the data uniquely determines the answer, not whether it is merely relevant.
Worked example
P is the son of Q. Q is the sister of R. R is the father of S. How is P related to S?
Draw: Q and R are siblings. P is Q's son, so P is R's nephew. S is R's child, so S is P's cousin. P is male, so P is S's cousin (male cousin). The answer is 'cousin,' not 'brother,' because P's parent Q is S's aunt, not S's parent.
Traps
- Treating 'some' as 'some not' in syllogisms.
- Reversing a conditional: 'If A then B' does not mean 'If B then A.'
- Ignoring words such as only, unless, and at least in puzzles.
- Adding unstated assumptions in critical-reasoning items.
- In data sufficiency, using one statement's information to judge the other statement.