Preparation guide
Persistent Systems Aptitude Questions
Overview
This page has Persistent Systems aptitude questions with full solutions - numerical ability, verbal, and logical reasoning - in the style students report for the Persistent Online Assessment. Start with the timed mock quiz, then work the solved set and log every miss by topic.
Persistent Systems 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
All pens are books. Some books are papers. Conclusion: Some pens are papers.
No definite overlap between pens and papers.
Reasoning
In how many ways can 4 books be arranged on a shelf?
Correct answer: 24 ways
Quantitative
Compound interest on ₹1000 at 10% for 2 years (annual compounding):
1000×1.1² − 1000 = 210.
Verbal
Problem: "She is allergic _____ peanuts." a) to b) from c) with d) by
"Allergic to" is the correct prepositional phrase.
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
If cost price is ₹250 and profit is 20%, selling price is:
SP = 250 × 1.2 = ₹300.
Reasoning
How many 9s are there between 1 and 100?
9,19,29,39,49,59,69,79,89,90-99 → 20 nines.
Verbal
"Break the ice" means:
It means to initiate conversation in a social setting.
Quantitative
The average of 5 numbers is 20. If one number is removed, the average becomes 18. Find the removed number.
Correct answer: 28
Quantitative
A number is increased by 20% and then decreased by 20%. Find the net percentage change.
Let original = 100 After 20% increase: 120 After 20% decrease: 96 Net change = 4% decrease
Verbal
Choose the correctly spelled word:
Correct spelling is Accommodation.
Reasoning
Series: 1, 4, 9, 16, 25, ?
Perfect squares → 36.
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)
Verbal
"To add fuel to the fire" means:
It means worsening a conflict or situation.
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.
Your score
0/15(0%)
Review
Persistent Systems 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: Consecutive integers
Problem: If the sum of three consecutive integers is 72, what is the smallest of these integers?
Solution: Let the integers be x, x+1, and x+2.
x + (x+1) + (x+2) = 72 3x + 3 = 72 3x = 69 x = 23
So the integers are 23, 24, and 25.
Answer: 23
Q2: Average after replace
Problem: The average of five numbers is 20. One number 30 is replaced by 10. What is the new average?
Solution: Old sum = 5 × 20 = 100. New sum = 100 − 30 + 10 = 80. New average = 80 / 5 = 16.
Answer: 16
Q3: Mixture milk
Problem: A mixture has milk and water in the ratio 4:1. If 5 litres of water are added to 20 litres of mixture, what is the new milk:water ratio?
Solution: In 20 L: milk = 16 L, water = 4 L. After adding 5 L water: milk 16, water 9. Ratio = 16:9.
Answer: 16:9
Q4: 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
Q5: Unitary rice
Problem: 12 kg rice costs ₹540. Cost of 8 kg?
Solution: Per kg = 45. 8 kg = ₹360.
Answer: ₹360
Q6: Sum of naturals
Problem: What is the sum of the first 50 natural numbers?
Solution: Sum of first n naturals = n(n+1)/2. For n = 50: 50 × 51 / 2 = 1275.
Answer: 1275
Q7: Consumption cut
Problem: If the price of an item rises by 25%, by what percent should consumption fall so that expenditure stays the same?
Solution: Required reduction = r/(100+r) × 100 with r = 25. = 25/125 × 100 = 20%.
Answer: 20%
Q8: Ratio mixture tea
Problem: Tea worth ₹120/kg is mixed with tea worth ₹180/kg in the ratio 3:2. Find the price of the mixture per kg.
Solution: Price = (3×120 + 2×180) / 5 = (360 + 360) / 5 = 720/5 = ₹144 per kg.
Answer: ₹144
Q9: Relative speed trains
Problem: Two trains 120 m and 180 m long run at 40 and 50 km/h in opposite directions. Time to cross?
Solution: Relative speed = 90 km/h = 25 m/s. Distance = 300 m. Time = 12 s.
Answer: 12 seconds
Q10: Alligation milk
Problem: Milk at ₹40/L and ₹50/L mixed to get ₹44/L. Ratio of quantities?
Solution: Alligation: (50−44):(44−40) = 6:4 = 3:2.
Answer: 3:2
Verbal ability questions
Q11: One word - extinct
Problem: A species that no longer exists is?
Solution: Extinct.
Answer: Extinct
Q12: 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
Q13: Fill blank preposition
Problem: She is good _____ mathematics. (in / at / on / of)
Solution: Standard collocation: good at.
Answer: at
Q14: Fill blank article
Problem: He is _____ honest man. (a / an / the / no article)
Solution: ‘Honest’ begins with vowel sound → an.
Answer: an
Q15: Sentence rearrange
Problem: Arrange: (1) the exam (2) she cleared (3) with ease
Solution: She cleared the exam with ease.
Answer: 2-1-3
Q16: Synonym - resilient
Problem: Best synonym of ‘resilient’?
Solution: Able to recover quickly → tough / flexible.
Answer: Tough / adaptable
Reasoning ability questions
Q17: Syllogism some
Problem: All pens are books. Some books are desks. Conclusion: Some pens are desks?
Solution: No forced overlap between pens and desks. Does not follow.
Answer: Does not follow
Q18: 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
Q19: Seating hint
Problem: Five friends sit in a row. A is to the left of B but right of C. D is to the right of B and left of E. Who is in the middle?
Solution: Order from left to right: C, A, B, D, E. The middle seat is B.
Answer: B
Q20: Syllogism
Problem: Statements: All engineers are graduates. Some graduates are managers. Conclusion: Some engineers are managers. Does it follow?
Solution: The ‘some graduates’ who are managers need not overlap with the engineers. The conclusion does not follow necessarily.
Answer: Does not follow
Q21: Odd one out
Problem: Find the odd one out: 3, 5, 7, 9, 11
Solution: 3, 5, 7, and 11 are prime. 9 = 3×3 is composite, so it is the odd one out.
Answer: 9
Q22: Input output step
Problem: Input: 34 12 57 23. Step1 sorts ascending: 12 23 34 57. What is Step1 third element?
Solution: Sorted: 12, 23, 34, 57. Third = 34.
Answer: 34
Timed practice tips for Persistent Systems
- 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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