Aptitude
Drills
Jio placement papers 2025
Overview
Section titled “Overview”Jio placement papers 2025. Primary filter: Jio Online Assessment. Focus: Aptitude, coding, telecom/CS basics.
Jio 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
Price rises by 25%. By what % should consumption fall to keep expenditure the same?
Reduction = 25/(100+25)×100 = 20%.
Quantitative
A car covers 180 km in 3 hours. Average speed is:
Speed = 180/3 = 60 km/h.
Reasoning
Statements: Some cats are dogs. All dogs are animals. Conclusion: Some cats are animals. Is the conclusion valid?
Correct answer: Valid
Verbal
Choose correct: The news _____ good.
"News" is singular → is.
Quantitative
What does "Break the ice" mean?
"Break the ice" means to initiate conversation in a social setting.
Verbal
Fill: Neither the teacher nor the students _____ present.
With neither…nor, verb agrees with nearer subject (students) → were.
Quantitative
A man can row 7 km/h in still water. If the river is flowing at 3 km/h, how long will it take him to row 12 km downstream?
Speed in still water = 7 km/h Speed of stream = 3 km/h Downstream speed = 7 + 3 = 10 km/h Time = Distance/Speed = 12/10 = 1.2 hours = 1 hour 12 minutes
Quantitative
A train 120 m long crosses a pole in 8 s. Speed in km/h:
Speed = 120/8 = 15 m/s = 54 km/h.
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
A walks 10m North, turns right walks 5m, turns right walks 10m. Direction from start?
Correct answer: East (5m east of starting point)
Reasoning
If letter positions are summed (A=1…Z=26), RED equals:
Sum of positions = 27.
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.
Reasoning
If BOOK is coded as 43, then PEN is coded as:
B+O+O+K = 2+15+15+11 = 43; P+E+N = 16+5+14 = 35.
Quantitative
A person travels first half of distance at 40 km/hr and second half at 60 km/hr. Find average speed.
Let total distance = 2D Time for first half = D/40 Time for second half = D/60 Total time = D/40 + D/60 = D(3+2)/120 = 5D/120 = D/24 Average speed = 2D / (D/24) = 48 km/hr
Verbal
Synonym of "Abundant":
Abundant means plentiful.
Your score
0/15(0%)
Review
Sample Jio Questions with Solutions
Section titled “Sample Jio Questions with Solutions”Practice-style questions (not leaked live papers).
Aptitude / Reasoning
Section titled “Aptitude / Reasoning”Q1: Probability of drawing an ace from a deck?
Answer: 1/13
Explanation: 4/52=1/13.
Q2: Pipe A fills in 6h, B in 8h. Together to fill?
Answer: 24/7 hours
Explanation: 1/6+1/8=7/24.
Q3: CP Rs.500, SP Rs.600. Profit percent?
Answer: 20%
Explanation: (100/500)*100=20%.
Q4: Find next: 2, 6, 12, 20, 30, ?
Answer: 42
Explanation: n(n+1) pattern.
Q5: 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.
Q6: 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.
Q7: Simple interest on Rs.8000 at 10% for 2 years?
Answer: Rs.1600
Explanation: SI = PRT/100 = 1600.
Q8: If 30% of x = 150, x = ?
Answer: 500
Explanation: 0.3x=150 => x=500.
Coding Practice
Section titled “Coding Practice”Coding Q1: Two Sum
Approach: Hash map complements.
Complexity: O(n)
Jio tip: Narrate brute force then optimize then edge cases before coding.
Coding Q2: Longest substring without repeat
Approach: Sliding window + last index.
Complexity: O(n)
Jio tip: Narrate brute force then optimize then edge cases before coding.
Coding Q3: Merge intervals
Approach: Sort + merge.
Complexity: O(n log n)
Jio tip: Narrate brute force then optimize then edge cases before coding.
Coding Q4: Top K frequent
Approach: Count + heap.
Complexity: O(n log k)
Jio tip: Narrate brute force then optimize then edge cases before coding.
Coding Q5: Linked list cycle
Approach: Floyd tortoise-hare.
Complexity: O(1) space
Jio tip: Narrate brute force then optimize then edge cases before coding.
Coding Q6: Level order traversal
Approach: BFS queue.
Complexity: O(n)
Jio tip: Narrate brute force then optimize then edge cases before coding.
Coding Q7: Coin change min coins
Approach: DP unbounded.
Complexity: O(amount*coins)
Jio tip: Narrate brute force then optimize then edge cases before coding.
Coding Q8: Binary search
Approach: Lo/hi mid.
Complexity: O(log n)
Jio tip: Narrate brute force then optimize then edge cases before coding.
Coding Q9: Kadane max subarray
Approach: Running best.
Complexity: O(n)
Jio tip: Narrate brute force then optimize then edge cases before coding.
Coding Q10: Reverse a string in-place
Approach: Two pointers from ends.
Complexity: O(n)/O(1)
Jio tip: Narrate brute force then optimize then edge cases before coding.
Deep Prep Notes for Jio
Section titled “Deep Prep Notes for Jio”How the Jio Online Assessment Usually Feels
Section titled “How the Jio Online Assessment Usually Feels”Candidates describe a paced filter where easy marks disappear if you over-invest in one hard item. For Jio, start with a three-minute scan, mark certainty levels, and protect accuracy. Languages typically include Java, Python, C++.
Topic Weight Hints (Candidate-Reported)
Section titled “Topic Weight Hints (Candidate-Reported)”| Area | Why it matters at Jio |
|---|---|
| Aptitude | Primary shortlist signal |
| Core CS (OOPs/DBMS/OS) | Technical interview depth |
| Telecom, Digital Services awareness | Managerial / HR differentiation |
| Communication | Especially for consulting and client-facing GSIs |
14-Day Sprint
Section titled “14-Day Sprint”- Days 1-3: pattern familiarization + 2 sectional mocks
- Days 4-7: weak-topic closed practice
- Days 8-10: full mocks every other day
- Days 11-14: interview narration + light revision
Related
Section titled “Related”Coding
DSA
OA
Assessment
Hub
Jio