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HCL Aptitude Questions
Overview
This page contains HCL aptitude questions with detailed solutions. Take the free mock quiz below for timed practice with scoring, then work through the solved set.
HCL 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
Quantitative
A shopkeeper marks goods 40% above cost and gives a 10% discount. Profit % is:
SP = 1.4 × 0.9 × CP = 1.26 CP → 26% profit.
Quantitative
Find the compound interest on ₹10,000 for 2 years at 10% per annum, compounded annually.
Correct answer: ₹2,100
Verbal
Antonym of "Optimistic":
Optimistic ↔ pessimistic.
Verbal
There are two pipes in a tank. Pipe A is for filling the tank and pipe B is for emptying the tank. If A can fill the tank in 10 hours and B can empty the tank in 15 hours then find how many hours will it take to completely fill a half empty tank?
Correct answer: 15 hours
Reasoning
A walks 9 km north, then 12 km east. Distance from start is:
Right triangle → 15 km.
Reasoning
If every letter is shifted +2 in the alphabet, CANDLE becomes:
C→E, A→C, N→P, D→F, L→N, E→G → ECPFNG.
Verbal
A trader sells an article at a profit of 25%. If he had bought it at 10% less and sold it for ₹15 less, he would have gained 30%. Find the cost price of the article.
Let actual CP = x Actual SP = 1.25x (25% profit) New CP = 0.9x (10% less) New SP = 1.25x - 15 New Profit = (1.25x - 15) - 0.9x = 0.35x - 15 New Profit % = ((0.35x - 15)/0.9x) × 100 = 30 (0.35x - 15)/0.9x = 0.30 0.35x - 15 = 0.27x 0.08x = 15 x = ₹187.50
Quantitative
Find the compound interest on ₹5000 for 2 years at 10% per annum, compounded annually.
Correct answer: ₹1050
Quantitative
Two dice are thrown. What is the probability of getting a sum of 7?
Total outcomes = 6 × 6 = 36 Favorable outcomes: (1,6), (2,5), (3,4), (4,3), (5,2), (6,1) = 6 Probability = 6/36 = 1/6
Reasoning
Number Series - 37, 47, 58, ?, 79, 95
Correct answer: 70
Verbal
One of my friends _____ in Delhi.
One of + plural noun + singular verb.
Reasoning
Statements: 1. Some books are novels, 2. All novels are stories, 3. No story is a poem
From 1 and 2: Some books are stories (I follows) From 2 and 3: No novel is a poem (II follows) From I: Some stories are books (III follows)
Quantitative
Pointing to a photograph, a man says, "She is the daughter of my grandfather's only son." How is the girl related to the man?
The man's grandfather's only son = the man's father Daughter of the man's father = the man's sister Therefore, the girl is the man's sister.
Quantitative
A mixture contains milk and water in ratio 3:2. If 10 liters of water is added, ratio becomes 2:3. Find initial quantity of mixture.
Let initial: Milk = 3x, Water = 2x After adding 10L water: Milk = 3x, Water = 2x + 10 3x / (2x + 10) = 2/3 9x = 4x + 20 5x = 20 x = 4 Initial quantity = 3x + 2x = 5x = 20 liters
Reasoning
Problem: What is the value of x? Statement 1: x² = 16 Statement 2: x > 0
From statement 1: x = 4 or -4 From statement 2: x > 0 Combining both: x = 4
Your score
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Review
HCL aptitude questions overview
Typical aptitude mix (from student reports):
- Numerical / Quantitative: percentages, profit & loss, ratios, time-work, averages, SI/CI, DI
- Logical Reasoning: series, coding-decoding, blood relations, seating, syllogisms, puzzles
- Verbal Ability: grammar, vocabulary, reading comprehension, sentence correction
Numerical ability questions
Percentages
Q1: A number is increased by 20% and then decreased by 20%. Find the net percentage change.
Let original = 100 → 120 → 96. Net = 4% decrease.
Answer: 4% decrease
Q2: Price rises by 25%. By what % should consumption fall to keep expenditure constant?
Reduction = 25/(100+25)×100 = 20%.
Answer: 20%
Profit and loss
Q3: Marked 40% above cost with 10% discount. Profit %?
SP = 1.4 × 0.9 × CP = 1.26 CP → 26% profit.
Answer: 26%
Q4: Sold at 10% loss. If sold for ₹60 more, profit 5%. Find CP.
0.9P + 60 = 1.05P → P = ₹400.
Answer: ₹400
Time and work
Q5: A finishes in 12 days, B in 18 days. Together?
1/12 + 1/18 = 5/36 → 7.2 days.
Answer: 7.2 days
Q6: 8 workers finish in 10 days. Days for 10 workers?
Man-days = 80 → 8 days.
Answer: 8 days
Speed, ratio, interest
Q7: Speed 60 km/h for 2.5 hours. Distance?
60×2.5 = 150 km.
Answer: 150 km
Q8: Ratio 3:5 and 5:7. Compound ratio?
3:7 after canceling middle 5s carefully → actually 3/5 × 5/7 = 3:7.
Answer: 3:7
Q9: SI on ₹5000 at 8% for 3 years?
₹1200.
Answer: ₹1200
Q10: Average of 5 numbers is 20. One number 25 replaced by 15. New average?
18.
Answer: 18
Verbal ability questions
Q11: Synonym of “Abundant”
Answer: Plentiful
Q12: She _____ to the office every day by metro.
Answer: goes
Q13: Antonym of “Benevolent”
Answer: Malevolent
Q14: Choose correct spelling
Answer: Accommodate
Q15: Spot error style - practice subject-verb agreement daily for HCL mocks.
Answer: Drill 10 S-V questions/day in your error log.
Reasoning ability questions
Q16: Next number: 2, 6, 12, 20, 30, ?
42.
Answer: 42
Extra drill set
Q17: A finishes work in 16 days, B in 19 days. Days together?
Rate = 1/16 + 1/19. Days = reciprocal of that sum.
Answer: compute exactly before the exam; practice the fraction form daily.
Q18: Price increases by 19%. Consumption reduction to keep spend constant?
Reduction % = r/(100+r)×100 with r=19.
Answer: 19/(100+19)×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
Data interpretation mini-set
Q25: A chart shows sales 40, 50, 60, 70. What is the average?
(40+50+60+70)/4 = 55.
Answer: 55
Q26: If Q1 is 20% of annual sales and annual is 500, Q1 sales?
100.
Answer: 100
Puzzle / arrangement warmups
Q27: Five people A-E in a row. A left of B, C opposite… (practice drawing first).
Always draw. Do not solve arrangement fully in your head under time.
Q28: Blood relation: A is sister of B. B is son of C. How is A related to C?
A is child of C (daughter if genders standard as stated).
Answer: Daughter (given A is sister)
Sectional timing template
| Section | Practice block | Target accuracy |
|---|---|---|
| Numerical | 15 Q / 15 min | 80%+ |
| Reasoning | 15 Q / 15 min | 75%+ |
| Verbal | 12 Q / 10 min | 85%+ |
Timed practice tips for HCL
- First pass: only high-confidence questions
- Mark and skip time sinks early
- Keep verbal accuracy high (easy marks)
- Replicate mock quiz timing thrice a week
- Sleep properly the night before; fatigue kills DI accuracy