Reasoning Ability is the third Foundation sub-section — 20 questions in 25 minutes. It checks how quickly you can spot patterns, decode relationships and follow logical rules. Scores here are often the differentiator among candidates who are equally good at maths and English.
Topics that appear repeatedly
- Number and letter series
- Coding and decoding
- Blood relations and directional sense
- Seating arrangements (linear and circular)
- Syllogisms, statements & conclusions
- Visual reasoning, cube folding and paper cutting
Practice TCS NQT reasoning questions
Find the missing numbers in the series: 225, 256, 289, ___, 361, ___, 441
Five friends — Alice, Bob, Carol, David, and Eve — are sitting in a row facing north. If Carol is sitting two places to the left of Eve, who is sitting at one of the ends?
In a certain code language, PARTICULAR is coded as RCTVKEWNCT. How is PHYSICAL written in the same code language?
Strategy: series, coding-decoding and blood relations are the fastest to solve — clear them first, and leave multi-line seating puzzles for the end of the 25 minutes.