Preparation guide
EPAM Aptitude Questions
Overview
This page has EPAM aptitude questions with full solutions - numerical ability, verbal, and logical reasoning - in the style students report for the EPAM Codility / Online Test. Start with the timed mock quiz, then work the solved set and log every miss by topic.
EPAM 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
Find the next number: 2, 6, 12, 20, 30, ?
Differences +4, +6, +8, +10, +12 → next is 42.
Reasoning
Statements: All cats are dogs. Some dogs are birds. Conclusions: I. Some cats are birds. II. All birds are cats.
Analyzing the statements: - All cats are dogs (A → B) - Some dogs are birds (B → C, some) Conclusion I: Some cats are birds - Since all cats are dogs, and some dogs are birds, we can say some cats are birds. Valid Conclusion II: All birds are cats - This canno
Quantitative
A and B finish a job in 12 and 18 days. Working together they finish in:
1/12 + 1/18 = 5/36 → 36/5 = 7.2 days.
Reasoning
Find next number: 1, 4, 9, 16, 25, ?
Pattern: n² where n = 1, 2, 3, 4, 5... 1²=1, 2²=4, 3²=9, 4²=16, 5²=25 Next: 6² = 36
Verbal
"Break the ice" means:
It means to initiate conversation in a social setting.
Verbal
Antonym of "Benevolent":
Benevolent ↔ malevolent.
Verbal
There _____ many books on the table.
Many books → plural.
Quantitative
A can complete a work in 10 days, B in 15 days. In how many days will they complete the work together?
Let total work = LCM of 10, 15 = 30 units A's efficiency = 30/10 = 3 units/day B's efficiency = 30/15 = 2 units/day Combined efficiency = 3 + 2 = 5 units/day Time taken = 30/5 = 6 days
Quantitative
If "APPLE" is coded as "BQQMF", how is "ORANGE" coded?
Correct answer: PSBOHF
Reasoning
Find the next number: 3, 9, 27, 81, ?
×3 each → 243.
Quantitative
Five people A, B, C, D, E sit in a row. A is not at either end. B sits next to A. C sits at one end. D sits between C and E. Who sits in the middle?
C is at one end. D is between C and E, so: C-D-E or E-D-C A is not at end, B is next to A If C-D-E, then A-B must be before: A-B-C-D-E (A at end, invalid) So: E-D-C, and A-B before: A-B-E-D-C Middle position: E
Verbal
He _____ to school every day.
Singular present.
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
Speed 72 km/h. Distance in 20 minutes:
72 × (20/60) = 24 km.
Reasoning
If letter positions are summed (A=1…Z=26), PEN equals:
Sum of positions = 35.
Your score
0/15(0%)
Review
EPAM aptitude topics students usually practice
- Numerical / quantitative: percentages, profit and loss, ratios, time and work, averages, SI/CI, speed-distance
- Logical reasoning: series, coding-decoding, blood relations, seating, syllogisms
- Verbal ability: grammar, vocabulary, error spotting, idioms
Numerical ability questions
Q1: Train platforms
Problem: A 200 m train at 72 km/h crosses a 160 m platform. Time taken?
Solution: Speed = 72 × 5/18 = 20 m/s. Distance = 200+160 = 360 m. Time = 360/20 = 18 s.
Answer: 18 seconds
Q2: Permutation basic
Problem: In how many ways can 5 different books be arranged on a shelf?
Solution: Arrangements of 5 distinct items = 5! = 120.
Answer: 120
Q3: Worker scaling
Problem: Eight workers finish a job in 10 days. How many days will 10 workers take for the same job (same pace)?
Solution: Total man-days = 8 × 10 = 80. Days for 10 workers = 80 / 10 = 8 days.
Answer: 8 days
Q4: Percentage recover
Problem: If 30% of a number is 150, what is the number?
Solution: 0.3x = 150 → x = 150 / 0.3 = 500.
Answer: 500
Q5: A and B together
Problem: A can finish a job in 10 days and B in 20 days. How long will they take working together?
Solution: A’s one-day work = 1/10. B’s one-day work = 1/20. Together = 1/10 + 1/20 = 3/20 per day. Time = 20/3 ≈ 6.67 days (6 days 16 hours).
Answer: 20/3 days
Q6: Speed convert
Problem: Convert 18 m/s to km/h.
Solution: Multiply by 18/5: 18 × 18/5 = 64.8 km/h.
Answer: 64.8 km/h
Q7: Algebra ages
Problem: Father is 3 times as old as son. After 12 years he will be twice as old. Son’s present age?
Solution: 3x + 12 = 2(x + 12) → 3x + 12 = 2x + 24 → x = 12.
Answer: 12 years
Q8: Average of averages
Problem: Average of 10 numbers is 25. Average of first 6 is 20. Average of last 4?
Solution: Total = 250. First 6 sum = 120. Last 4 sum = 130. Average = 130/4 = 32.5.
Answer: 32.5
Q9: Discount successive
Problem: Two successive discounts of 10% and 20% equal a single discount of?
Solution: Net multiplier = 0.9 × 0.8 = 0.72 → 28% single discount.
Answer: 28%
Q10: Man days leftover
Problem: 15 men can do a job in 20 days. After 5 days, 5 men leave. How many more days to finish?
Solution: Work done in 5 days = 15×5 = 75 man-days. Total = 300. Left = 225. Remaining men = 10. Days = 225/10 = 22.5 days.
Answer: 22.5 days
Verbal ability questions
Q11: Fill in the blank
Problem: She _____ to the office every day by metro. (go / goes / going / gone)
Solution: Third-person singular present needs ‘goes’.
Answer: goes
Q12: Idiom - hit the nail
Problem: What does ‘hit the nail on the head’ mean?
Solution: To describe exactly the right point.
Answer: Be exactly right
Q13: Phrase - by and large
Problem: Meaning of ‘by and large’?
Solution: Generally / on the whole.
Answer: Generally
Q14: Synonym - obsolete
Problem: Choose the best synonym of ‘obsolete’.
Solution: ‘Obsolete’ means no longer in use. Closest: outdated.
Answer: Outdated
Q15: Fill blank article
Problem: He is _____ honest man. (a / an / the / no article)
Solution: ‘Honest’ begins with vowel sound → an.
Answer: an
Q16: Error spotting
Problem: Spot the error: ‘Neither of the boys have submitted their assignment.’
Solution: ‘Neither’ is singular, so the verb should be ‘has’ (and ideally ‘his’ / ‘their’ per style guide). Correct: Neither of the boys has submitted his assignment.
Answer: have → has
Reasoning ability questions
Q17: Seating circular
Problem: Four people sit around a square table facing center. A sits opposite C. If B is left of A, who is right of C?
Solution: Opposite pairs A-C. B left of A means clockwise B. Right of C is B.
Answer: B
Q18: Puzzle order
Problem: P finishes before Q but after R. S finishes after Q. Who finished first?
Solution: Order: R, P, Q, S. First is R.
Answer: R
Q19: Series alternate
Problem: Find next: 2, 3, 5, 8, 12, ?
Solution: Differences +1,+2,+3,+4,+5 → next diff 5 → 17.
Answer: 17
Q20: Direction turn
Problem: A person walks 5 km north, then 3 km east, then 5 km south. How far is he from the start, and in which direction?
Solution: North 5 and south 5 cancel. He is 3 km east of the start.
Answer: 3 km east
Q21: Coding opposite
Problem: If ROAD is coded as URDG, how is RACE coded?
Solution: Each letter +3: R→U, O→R, A→D, D→G. R→U, A→D, C→F, E→H → UDFH.
Answer: UDFH
Q22: Analogy tool
Problem: Hammer is to Nail as Pen is to ?
Solution: Hammer drives nail; pen writes (on paper/ink). Best: Paper / Writing.
Answer: Paper
Timed practice tips for EPAM
- First pass: only high-confidence questions
- Mark and skip time sinks early
- Keep verbal accuracy high - these are easy marks if you stay calm
- Run the mock quiz at least three times a week under real timing
- Sleep properly the night before; fatigue hurts DI and calculation accuracy
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