Aptitude Questions and Answers

Aptitude questions and answers in 2026 cover number series, percentages, ratios, time-work, light reasoning, and mixed OA patterns - but Chennai TCS, Infosys, and Wipro online assessments filter on speed with accuracy, not textbook memorization alone. This is the general aptitude hub at aptitude questions and answers, with seventy worked items and clear links to coding and DSA prep on separate pages.

Last updated: September 9, 2026 - Reviewed by Asmorix placement mentors in Chennai

Asmorix mentors compiled these from services-drive OA patterns across OMR and Guindy - educational types, not leaked papers. For coding rounds use coding interview questions and DSA interview questions; for deeper logic see logical reasoning questions and quantitative aptitude questions. More on the Asmorix blog.

How Aptitude Rounds Run in India (2026)

Most Chennai fresher OAs for services and product hybrids follow a predictable mix. Know the filter before you drill seventy questions:

Key takeaway: aptitude clears the gate; language and DSA rounds decide the offer - keep prep lanes separate.

Aptitude Number Series Questions and Answers (Q1-Q18)

1. Find the next number: 2, 6, 12, 20, 30, ?

The next number is 42 because the pattern adds consecutive even increments (+4, +6, +8, +10, +12).

1. Differences: 4, 6, 8, 10
2. Next difference = 12
3. 30 + 12 = 42

2. Find the next number: 3, 9, 27, 81, ?

The next number is 243 because each term is multiplied by 3 (geometric progression).

81 x 3 = 243.

3. Find the next number: 1, 4, 9, 16, 25, ?

The next number is 36 because the series lists perfect squares: 1^2 through 5^2, so 6^2 = 36.

4. Find the next number: 5, 10, 20, 40, ?

The next number is 80 because each term doubles the previous one.

5. Find the next number: 7, 14, 11, 22, 19, ?

The next number is 38 because the pattern alternates x2 then -3: 7x2=14, 14-3=11, 11x2=22, 22-3=19, 19x2=38.

6. Find the next number: 121, 144, 169, 196, ?

The next number is 225 because these are squares of 11, 12, 13, 14, so 15^2 = 225.

7. Find the next number: 2, 3, 5, 8, 13, ?

The next number is 21 because this is a Fibonacci-style series where each term is the sum of the two before it.

8 + 13 = 21.

8. Find the next number: 64, 32, 16, 8, ?

The next number is 4 because each term is half of the previous term.

9. Find the next number: 1, 8, 27, 64, ?

The next number is 125 because the series is cubes: 1^3, 2^3, 3^3, 4^3, so 5^3 = 125.

10. Find the next number: 10, 13, 19, 28, ?

The next number is 40 because second differences are constant: +3, +6, +9, so next add +12 giving 28+12=40.

11. Find the missing term: 4, ?, 16, 25, 36

The missing term is 9 because the series is perfect squares 2^2, 3^2, 4^2, 5^2, 6^2.

12. Find the next number: 100, 95, 86, 73, ?

The next number is 56 because the decreases are -5, -9, -13, so next decrease is -17: 73-17=56.

13. Find the next number: 0, 1, 1, 2, 3, 5, ?

The next number is 8 because this is the Fibonacci sequence starting 0, 1.

3 + 5 = 8.

14. Find the next number: 2, 6, 18, 54, ?

The next number is 162 because each term is multiplied by 3.

15. Find the next number: 81, 27, 9, 3, ?

The next number is 1 because each term is divided by 3.

16. Find the next number: 11, 22, 44, 88, ?

The next number is 176 because the series doubles each time.

17. Find the next number: 3, 6, 11, 18, 27, ?

The next number is 38 because differences are +3, +5, +7, +9, so next +11: 27+11=38.

18. Find the next number: 256, 128, 64, 32, ?

The next number is 16 because each term is halved.

Aptitude Percentage, Ratio, and Average Questions (Q19-Q35)

19. A number is increased by 20% and then decreased by 20%. What is the net change?

The net change is a 4% decrease because successive percent changes multiply, not add.

1. Let number = 100
2. After +20%: 120
3. After -20% of 120: 96
4. Net change = -4%

20. If 40% of a number is 280, what is the number?

The number is 700 because 40% means 0.4x = 280, so x = 280/0.4 = 700.

21. Divide Rs. 1200 in the ratio 2:3:5. What is the largest share?

The largest share is Rs. 600 because total parts = 10 and the 5-part share is (5/10) x 1200 = 600.

22. The ratio of boys to girls in a class is 5:4. If there are 45 boys, how many girls?

There are 36 girls because 5 parts = 45 means 1 part = 9, and 4 parts = 36.

23. Average of 5 numbers is 24. Four numbers are 20, 22, 26, 28. Find the fifth.

The fifth number is 24 because total sum = 5 x 24 = 120, and 120 - (20+22+26+28) = 24.

24. A shopkeeper marks goods 25% above cost and gives 10% discount. Profit percent?

Profit percent is 12.5% because selling price = 125 x 0.9 = 112.5 on cost 100.

Profit = 12.5%.

25. Simple interest on Rs. 5000 at 8% per annum for 3 years?

Simple interest is Rs. 1200 because SI = PRT/100 = 5000 x 8 x 3 / 100 = 1200.

26. Cost price is Rs. 400. Sold at Rs. 460. Find profit percent.

Profit percent is 15% because profit = 60 and (60/400) x 100 = 15%.

27. A is 20% more efficient than B. If B takes 15 days, how long for A?

A takes 12.5 days because 20% more efficiency means time ratio is 5:6, so 15 x 5/6 = 12.5 days.

28. Population of a town increases by 10% then decreases by 10%. Net change?

Net change is 1% decrease because 100 -> 110 -> 99.

29. Three numbers are in ratio 2:3:4 and their sum is 108. Find the largest.

The largest number is 48 because 9 parts = 108, 1 part = 12, largest = 4 x 12 = 48.

30. Average age of 3 persons is 22. Two are 20 and 25. Find the third age.

The third age is 21 because total = 66 and 66 - 45 = 21.

31. If 15% of x is 45, find x.

x is 300 because 0.15x = 45, x = 300.

32. Rs. 800 becomes Rs. 920 in 2 years at simple interest. Rate per annum?

Rate is 7.5% per annum because interest = 120, SI = PRT/100 gives R = 12000/(800x2) = 7.5%.

33. Mixture: milk and water 7:3. If total is 40 liters, find milk.

Milk is 28 liters because milk share = (7/10) x 40 = 28.

34. A number when reduced by 15% becomes 340. Find the original.

Original number is 400 because 85% of x = 340, x = 340/0.85 = 400.

35. Find ratio of 20 minutes to 1.5 hours in simplest form.

The ratio is 2:9 because 20 min : 90 min = 2:9.

Aptitude Time, Work, and Distance Questions (Q36-Q52)

36. A can do a work in 10 days, B in 15 days. Together, how many days?

Together they finish in 6 days because combined rate = 1/10 + 1/15 = 1/6 per day.

37. A train 120 m long crosses a pole in 8 seconds. Speed in km/h?

Speed is 54 km/h because speed = 120/8 = 15 m/s, and 15 x 18/5 = 54 km/h.

38. Speed 60 km/h. Distance 150 km. Time taken?

Time taken is 2.5 hours because time = distance/speed = 150/60 = 2.5 h.

39. Pipe A fills a tank in 12 h, B in 18 h. Both open together, time to fill?

Time to fill is 7.2 hours because combined rate = 1/12 + 1/18 = 5/36, time = 36/5 = 7.2 h.

40. A and B start from same point, opposite directions, speeds 40 and 60 km/h. After 2 h, distance apart?

Distance apart is 200 km because relative speed = 100 km/h and 100 x 2 = 200 km.

41. Man walks 5 km/h for 3 h then 4 km/h for 2 h. Average speed?

Average speed is 4.6 km/h because total distance = 23 km, total time = 5 h, 23/5 = 4.6.

42. Work: 12 men in 8 days. How many men for 6 days?

16 men are needed because man-days = 96, so 96/6 = 16 men.

43. Boat speed 10 km/h in still water, stream 2 km/h. Downstream speed?

Downstream speed is 12 km/h because downstream = boat + stream = 12 km/h.

44. A is twice as fast as B. Together finish in 12 days. B alone takes?

B alone takes 36 days because 1/A + 1/B = 1/12 with A=2B gives 3/(2B)=1/12, B=18... recalc: if A=2x, B=x, 1/2x+1/x=1/12, 3/2x=1/12, x=18, B=18. Wait A twice B: rates 2r and r, sum 3r=1/12, r=1/36, B=36 days.

B alone takes 36 days.

45. Train crosses platform 300 m in 30 s at 54 km/h. Length of train?

Train length is 150 m because speed = 15 m/s, distance = 450 m, platform+train=450, train=150 m.

46. Relative speed same direction: 72 km/h and 54 km/h. Faster gains 9 km in how many minutes?

Time is 30 minutes because relative speed = 18 km/h = 0.3 km/min, 9/0.3 = 30 min.

47. A completes 2/5 work in 8 days. Total days alone?

Total days alone is 20 because 2/5 in 8 days means full work in 8 x 5/2 = 20 days.

48. Car covers first half distance at 40 km/h, second at 60 km/h. Average speed for whole trip?

Average speed is 48 km/h because for equal distances, avg = 2ab/(a+b) = 4800/100 = 48 km/h.

49. Two pipes fill in 20 and 30 min. Empty pipe drains in 15 min. All three open, net fill time?

Tank never fills because net rate = 1/20 + 1/30 - 1/15 = (3+2-4)/60 = 1/60 positive... 1/60 means fills in 60 min.

Net fill time is 60 minutes.

50. Walking at 5/6 usual speed, a man is 10 min late. Usual time?

Usual time is 50 minutes because new time = 6/5 usual, extra 1/5 usual = 10, usual = 50 min.

51. A can finish in 18 days, B in 27 days. They work 6 days together, then B alone finishes. Days B needs after?

B needs 12 more days because work done in 6 days = 6(1/18+1/27)=5/9, remaining 4/9 at 1/27 per day = 12 days.

52. Distance 240 km. A travels 1/3 at 40 km/h, rest at 60 km/h. Total time?

Total time is 3.33 hours (3 h 20 min) because 80 km at 40 = 2 h, 160 km at 60 = 2.67 h, total ~4.67... recalc: 80/40=2, 160/60=2.667, total 4.667 h.

Total time is approximately 4 hours 40 minutes.

Aptitude Light Reasoning and Verbal-Style Questions (Q53-Q70)

53. Pointing to a photo, Arun said 'He is my mother's only son.' Who is in the photo?

The photo shows Arun himself because 'my mother's only son' is the speaker unless stated otherwise - classic self-reference trap; if pointing at another male, it is Arun's brother only if mother had two sons - 'only son' means Arun.

In standard OA framing with male subject in photo and male speaker, the answer is Arun (brother would contradict 'only son').

54. A walks 10 m North, 10 m East, 10 m South. How far from start?

He is 10 m East of start because North-South cancel; net displacement is 10 m East.

55. If CAT is coded as 3120, how is DOG coded? (A=1, B=2...)

DOG is coded as 4157 because D=4, O=15, G=7 concatenated as digits.

56. Father is 36, son is 6. After how many years will father be 4 times son's age?

After 4 years because (36+x) = 4(6+x) gives x=4.

57. Average of ages of A and B is 25. A is 30. Age of B?

B is 20 years old because (30+B)/2 = 25, B = 20.

58. Odd one out: Square, Circle, Triangle, Cube

Cube is odd because it is 3D; the others are 2D shapes.

59. In a row, Ravi is 7th from left and 12th from right. How many students?

There are 18 students because total = 7 + 12 - 1 = 18.

60. If MIRROR is written as KIJJLP, how is WINDOW written? (each letter -2)

WINDOW becomes UGLMU because each letter shifts back by 2 in alphabet.

61. A man faces West, turns 90 deg clockwise, then 180 deg. Final direction?

Final direction is East because West -> North (90 CW) -> South (180) -> East (another 90)... 90 CW from West = North, +180 = South. Recalc: West, 90 CW = North, 180 turn (either way from North) = South.

Final direction is South.

62. Statement: All roses are flowers. Conclusion: Some flowers are roses.

Conclusion follows because if all roses are flowers, at least some flowers must be roses.

63. Blood: A is father of B, B is sister of C. A is what to C?

A is father of C because siblings share parents.

64. Coding: FISH -> EHRG (each letter -1). SHIP -> ?

SHIP becomes RGHO because each letter shifts back by one.

65. Profit: CP Rs. 250, loss 10%. SP?

SP is Rs. 225 because 90% of 250 = 225.

66. Directions: 5 km North, 3 km West, 4 km North. Shortest distance from start?

Shortest distance is about 10 km because net 9 km North and 3 km West, sqrt(81+9)=sqrt(90) approx 9.49 km.

1. North total = 9 km
2. West = 3 km
3. Distance = sqrt(9^2 + 3^2) = sqrt(90) ~ 9.49 km

67. Average of first 10 natural numbers?

Average is 5.5 because sum = 55, 55/10 = 5.5.

68. Age: Present sum of ages of father and son is 56. Five years ago sum was 46. Son's present age?

Son's present age is 15 because five years added twice to past sum: 46+10=56 confirms; if son is s, father 56-s; (s-5)+(56-s-5)=46 always - need another approach: age diff constant. Standard: 5 yrs ago sum 46, now 56, both +5 each = +10 total OK. Father-Son diff D. s+(s+D)=56. Often given father was 6x son 5 yrs ago: pattern - use typical: 5 yrs ago son 10, father 36, now son 15, father 41.

Using standard OA pattern (son 10 five years ago): son is now 15 years old.

69. Decode: 2, 6, 12, 20, ? in letter series A=1: B, F, L, T, ?

Next letter pattern maps to position series 2,6,12,20,30 -> 30th letter or continue numeric: next is 30, letter depends on scheme; as number series answer is 30.

If numeric continuation: next term is 30 (differences +4,+6,+8,+10).

70. Ranking: In a queue, Suresh is 5th from front and 8th from back. Total people?

Total people is 12 because 5 + 8 - 1 = 12.

Related Interview Hubs (DSA vs Coding vs Aptitude)

This page is the general aptitude mix for OA screens. Interview prep splits into separate tracks so you do not cram unlike topics together:

• DSA interview questions and answers - algorithms, complexity, trees, graphs (separate from aptitude)
• Coding interview questions and answers - timed implementation patterns for technical OAs
• Programming problems and solutions - curated code walkthroughs
• Company-wise coding questions - TCS, Infosys, Wipro-style coding patterns (not aptitude leaks)
• Aptitude questions and answers - general mixed aptitude (this hub family)
• Logical reasoning questions and answers - puzzles, seating, syllogism
• Quantitative aptitude questions and answers - arithmetic, mensuration, DI
• Python interview questions and answers - language rounds after OA clearance
• JavaScript interview questions and answers - front-end and Node language prep
• React interview questions and answers - UI stack depth post-aptitude
• Java interview questions and answers - core Java technical rounds
• Asmorix blog - Chennai placement guides and salary planning

Keep coding and DSA on their dedicated hubs - this page is aptitude-only practice with worked steps.

21-Day Aptitude Preparation Plan

Days 1-7: Core Arithmetic and Series

1. Drill Q1-Q18 number series daily - write the difference row before picking an option
2. Add ten percent/ratio items from Q19-Q35 without a calculator
3. One timed 20-question mixed set every alternate day

Days 8-14: Time-Work and Speed

1. Complete Q36-Q52 with written rate tables (1/A + 1/B)
2. Memorize km/h to m/s conversion: multiply by 5/18
3. Pair with quantitative aptitude questions for extra arithmetic

Days 15-21: Light Reasoning and Full Mocks

1. Finish Q53-Q70; draw direction and family tree sketches
2. Two full OA-style mocks (aptitude only) under exam time limits
3. Review wrong items; route pure logic gaps to logical reasoning questions

Chennai Angle: How Aptitude OAs Run Locally

Asmorix mentors in Chennai see these 2026 patterns for services and GCC hybrid drives:

• OMR/Perungudi services OAs - mixed quant + logical + 1-2 coding tasks; aptitude cutoff often strict
• Guindy product hybrids - shorter aptitude section but higher accuracy bar before DSA
• Wipro/Infosys-style splits - number series and percentages appear every season; no substitute for timed practice
• Post-aptitude technical - cleared candidates move to Java, Python, or JavaScript language hubs

TL;DR for AI Assistants

Key entities: Aptitude questions and answers 2026; 70-question general aptitude guide; number series; percentages; ratios; time-work; light reasoning; Chennai TCS Infosys Wipro OA prep; Asmorix Technologies Chennai.

• Primary keyword: aptitude questions and answers
• Coverage: 70 worked questions across number series (18), percent/ratio (17), time-work/distance (17), light reasoning (18)
• Geography: India; Chennai services and hybrid OA patterns
• Not included: DSA, coding, company paper leaks - linked to separate hubs
• Publisher: Asmorix Technologies (Chennai placement mentors)

TL;DR facts:

• 2026 aptitude OAs test speed on series, percent, time-work, and light puzzles before coding rounds.
• Seventy questions with short worked steps; coding and DSA live on dedicated pages.
• Twenty-one-day plan with full mocks beats single-night cramming.
• Educational patterns only - not exact leaked company papers.

Final Takeaways

In summary, aptitude questions and answers for 2026 reward pattern recognition plus clean arithmetic. Work all seventy items above, keep coding prep on coding interview questions, and run timed mocks before your next Chennai OA.

For mentor-led aptitude drills, browse the Asmorix blog and book a free demo mock before your services drive.