Prep Guide
Plan
Thoughtworks aptitude questions
Overview
Section titled “Overview”Practice Thoughtworks aptitude questions for Thoughtworks Coding / Pair Interview.
Thoughtworks Aptitude Mock Quiz
Timed placement-style MCQs with score and explanations after you submit. Use it to check speed and accuracy before the real test.
Questions15
Time10 min
Reasoning
A walks 9 km north, then 12 km east. Distance from start is:
Right triangle → 15 km.
Quantitative
A 120 m train crosses a pole in 8 s. Speed in km/h is:
Speed = 120/8 = 15 m/s = 54 km/h.
Quantitative
What is the output for n=7?
Correct answer: TRUE
Verbal
"The committee have decided": correct form is:
Collective noun "committee" as one unit takes singular "has".
Quantitative
A man buys an article for ₹800 and sells it at 25% profit. Selling price is:
SP = 800 × 1.25 = ₹1,000.
Verbal
A person who writes dictionaries is a:
Correct term: Lexicographer.
Quantitative
A sum of ₹8,000 amounts to ₹9,600 in 4 years at simple interest. Find the rate of interest per annum.
Principal = ₹8,000, Amount = ₹9,600 Interest = 9,600 - 8,000 = ₹1,600 SI = P × R × T / 100 1,600 = 8,000 × R × 4 / 100 R = (1,600 × 100) / (8,000 × 4) = 5%
Reasoning
Find next number: 2, 3, 5, 7, 11, ?
Pattern: Prime numbers in sequence 2, 3, 5, 7, 11, 13... Next: 13
Verbal
One who loves books is a:
Bibliophile = lover of books.
Reasoning
Odd one out: 8, 27, 64, 100, 125
Others are perfect cubes; 100 is not.
Reasoning
Find the missing number: 8, 12, 18, 26, 36, ?
Correct answer: 48
Verbal
Three pipes A, B, C can fill a tank in 12, 15, and 20 hours respectively. If all three are opened together, how long will it take to fill the tank?
A's rate = 1/12 per hour B's rate = 1/15 per hour C's rate = 1/20 per hour Combined rate = 1/12 + 1/15 + 1/20 = (5+4+3)/60 = 12/60 = 1/5 per hour Time = 1 / (1/5) = 5 hours
Reasoning
If letter positions are summed (A=1…Z=26), PEN equals:
Sum of positions = 35.
Quantitative
Two numbers are in ratio 3:5 and their sum is 56. The larger number is:
Parts = 8. Larger = 5/8 × 56 = 35.
Quantitative
The following table shows the sales of a company over 5 years. If the total sales in 2020 was ₹50,000, and sales increased by 20% each year, find the sales in 2024.
Sales in 2020 = ₹50,000 Sales in 2021 = 50,000 × 1.2 = ₹60,000 Sales in 2022 = 60,000 × 1.2 = ₹72,000 Sales in 2023 = 72,000 × 1.2 = ₹86,400 Sales in 2024 = 86,400 × 1.2 = ₹103,680
Your score
0/15(0%)
Review
Question 1
Section titled “Question 1”Simple interest on Rs.8000 at 10% for 2 years?
Answer: Rs.1600
Explanation: SI = PRT/100 = 1600.
Question 2
Section titled “Question 2”If 30% of x = 150, x = ?
Answer: 500
Explanation: 0.3x=150 => x=500.
Question 3
Section titled “Question 3”Average of 5 numbers is 20. One number 30 replaced by 10. New average?
Answer: 16
Explanation: Sum 100 -> 80; avg 16.
Question 4
Section titled “Question 4”A finishes in 10 days, B in 15. Together?
Answer: 6 days
Explanation: 1/10+1/15=1/6.
Question 5
Section titled “Question 5”Probability of drawing an ace from a deck?
Answer: 1/13
Explanation: 4/52=1/13.
Question 6
Section titled “Question 6”Pipe A fills in 6h, B in 8h. Together to fill?
Answer: 24/7 hours
Explanation: 1/6+1/8=7/24.
Question 7
Section titled “Question 7”CP Rs.500, SP Rs.600. Profit percent?
Answer: 20%
Explanation: (100/500)*100=20%.
Question 8
Section titled “Question 8”Find next: 2, 6, 12, 20, 30, ?
Answer: 42
Explanation: n(n+1) pattern.
Question 9
Section titled “Question 9”A train 120 m long runs at 54 km/h. Time to pass a pole?
Answer: 8 seconds
Explanation: 54 km/h = 15 m/s; t = 120/15 = 8 s.
Question 10
Section titled “Question 10”Ratio of ages A:B = 4:5. After 6 years = 6:7. A present age?
Answer: 12 years
Explanation: 4x+6 / 5x+6 = 6/7 => x=3 => A=12.
Extra Drill Set (THOUGHTWORKS flavor)
Section titled “Extra Drill Set (THOUGHTWORKS flavor)”Q17: A finishes work in 20 days, B in 17 days. Days together?
Rate = 1/20 + 1/17. Days = reciprocal of that sum.
Answer: compute exactly before the exam; practice the fraction form daily.
Q18: Price increases by 17%. Consumption reduction to keep spend constant?
Reduction % = r/(100+r)×100 with r=17.
Answer: 17/(100+17)×100 (simplify).
Q19: Average of 7 numbers is 18. One number 24 replaced by 10. New average?
Sum 126 → 112 → average 16.
Answer: 16
Q20: SI on ₹8000 at 7.5% for 2 years?
SI = 8000×7.5×2/100 = ₹1200.
Answer: ₹1200
Q21: Synonym of “Mitigate”
Answer: Alleviate / reduce
Q22: Series: 3, 9, 27, 81, ?
Multiply by 3 → 243.
Answer: 243
Q23: If NORTH is coded as 13 (letter count? or positions), prefer position-sum drills for your mock bank.
Practice coding-decoding patterns: +1/−1, reverse, position sums.
Answer: pattern-dependent; master 4 common patterns.
Q24: All engineers are graduates. Some graduates are managers. Conclusion: some engineers are managers?
Does not follow necessarily.
Answer: Does not follow
Related
Section titled “Related”Coding
DSA
2026
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