The aptitude portion of the TCS NQT, numerical and reasoning, is where many well-prepared candidates lose time rather than marks. TCS favours a specific band of topics and expects quick, clean solving. This page covers exactly which topics recur, how tight the per-question timing is, sample problems with approaches, and a focused practice routine to lift both speed and accuracy.
Start a free mock interview →Numerical Ability leans on a predictable topic set:
Reasoning Ability typically includes series and analogies, coding-decoding, blood relations, direction sense, seating arrangement, syllogisms and statement-conclusion. The difficulty is easy to moderate but the clock is unforgiving, so pattern recognition matters more than deep tricks.
Numerical Ability commonly gives you only around a minute or a little more per question, and some data-interpretation items eat far more, so budgeting is essential. A reliable strategy: on first pass, solve every question you recognise instantly, flag the two or three that need long calculation, and return only if time allows.
Because sectional cut-offs are applied independently, blindly guessing to boost one section will not rescue a weak one. Prioritise accuracy on your strong topics and secure those marks before gambling time on your weakest. Reported difficulty is moderate, so a candidate who is fast on the core topics is usually comfortable.
Percentages: a number is increased by 20% then decreased by 20%; what is the net change? Not zero, it is a 4% decrease (1.2 times 0.8 = 0.96). Learn this multiplier trick to avoid long working.
Time and work: A does a job in 12 days, B in 18; together how long? Use LCM units: total work 36, rates 3 and 2, combined 5 per day, so 7.2 days.
Coding-decoding: if FRIEND is coded HTKGPF, each letter shifts by +2; apply the same shift to decode new words.
Seating: draw the arrangement rather than holding it in your head, a quick circle-and-labels sketch prevents the classic left/right slip that costs easy marks.
Split your two weeks into topic days. Spend the first week securing the highest-frequency numerical topics, percentages, time-speed-distance, time-and-work, ratios, doing 20 to 30 timed questions each until you can solve on sight. In the second week rotate reasoning: coding-decoding, seating, syllogisms, blood relations.
Always practise with a visible timer and log why each miss happened. Most aptitude gains come not from learning new topics but from cutting your time per known question and eliminating careless errors. Keep a one-page formula and shortcut sheet you revise every morning.
Once the online test is behind you, the TCS interview tests communication too. InterviewPrep's free AI voice mock interview builds a session from your CV and a TCS role, scoring your spoken answers, pace and filler words so the human round feels rehearsed rather than raw.
The final 24 hours before the NQT aptitude sections are for consolidation, not new learning. Trying to absorb a fresh topic the night before usually adds anxiety without adding marks. Instead, run through your one-page formula and shortcut sheet twice, covering percentages multipliers, LCM work units, speed conversions and interest factors, so the high-frequency methods are instantly available.
Do a light, timed warm-up set of ten to fifteen questions across your strongest topics to enter the exam feeling fluent rather than rusty, but avoid a heavy full-length mock that leaves you drained. Revisit your mistakes log and reread the two or three error patterns you most often repeat, careless sign slips, misreading "not", direction confusion, so they stay front of mind.
On logistics, confirm your test slot, system and internet setup well ahead, since a technical scramble at the start wrecks your composure and eats time you cannot recover. Keep rough paper ready for sketching seating and direction problems, which are far safer on paper than in your head.
During the test itself, apply the two-pass rule: clear everything you recognise instantly, flag the long calculations, and return only if time allows. Protect accuracy on your strong topics before gambling minutes on your weakest. A calm, methodical run through the moderate questions clears the sectional bar far more reliably than a frantic attempt to solve every hard item on the first pass.
A strong aptitude score on the NQT is what turns the test into a passport for Freshers Jobs Off Campus Drive rounds across TCS and other Indian IT recruiters.
Sampled from the same bank we use for live placement drives. Answers and explanations unlock in the free practice set.
A 60-litre mixture of milk and water has milk and water in ratio 7 : 3. How much water must be added so that the new ratio becomes 7 : 5?
How many factors does the number 360 have?
If CAB is coded as XZY, how is DOG coded?
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