Aptitude
Drills
BARC placement papers 2024
Overview
Section titled “Overview”BARC placement papers 2024. Primary filter: BARC OCES/DGFS. Focus: GATE/exam technical depth.
BARC 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
If letter positions are summed (A=1…Z=26), TEAM equals:
Sum of positions = 39.
Quantitative
A is twice as efficient as B. Together they complete a work in 12 days. In how many days will A alone complete it?
Let B's efficiency = 1 unit/day A's efficiency = 2 units/day Together: 1 + 2 = 3 units/day Total work = 3 × 12 = 36 units A alone: 36 / 2 = 18 days
Verbal
The idiom "add fuel to the fire" means:
It means: make a situation worse.
Verbal
Choose correct: The news _____ good.
"News" is singular → is.
Quantitative
The LCM of 12 and 18 is:
LCM(12,18) = 36.
Reasoning
Find next number: 2, 3, 5, 7, 11, ?
Pattern: Prime numbers in sequence 2, 3, 5, 7, 11, 13... Next: 13
Reasoning
Number Series - 37, 47, 58, ?, 79, 95
Correct answer: 70
Verbal
One who loves books is a:
Bibliophile = lover of books.
Reasoning
In a row of 40 students, A is 11th from left. Rank from right is:
From right = 40 − 11 + 1 = 30.
Verbal
"She was _____ by the beautiful sunset."
Past tense passive voice requires past participle "amazed".
Quantitative
Find x: 3x + 7 = 22
3x = 15 → x = 5.
Quantitative
The ratio of savings to current account deposits in a bank is 3:5. If the total deposits are ₹800,000, find the savings account deposits.
Correct answer: ₹300,000
Quantitative
The next term in AP 7, 10, 13, 16, … is:
Common difference = 3 → next = 19.
Quantitative
If "INFOSYS" is coded as "SYFOSNI", how is "SYSTEM" coded?
Pattern: Letters are reversed INFOSYS → SYFOSNI (reversed) SYSTEM → METSYS (reversed)
Reasoning
In a row of 40 students, A is 11th from left and B is 31st from right. How many between A and B?
B from left = 40−31+1 = 10th. A is 11th. They are adjacent → 0 between.
Your score
0/15(0%)
Review
Sample BARC Questions with Solutions
Section titled “Sample BARC 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: Linked list cycle
Approach: Floyd tortoise-hare.
Complexity: O(1) space
BARC tip: Narrate brute force then optimize then edge cases before coding.
Coding Q2: Level order traversal
Approach: BFS queue.
Complexity: O(n)
BARC tip: Narrate brute force then optimize then edge cases before coding.
Coding Q3: Coin change min coins
Approach: DP unbounded.
Complexity: O(amount*coins)
BARC tip: Narrate brute force then optimize then edge cases before coding.
Coding Q4: Binary search
Approach: Lo/hi mid.
Complexity: O(log n)
BARC tip: Narrate brute force then optimize then edge cases before coding.
Coding Q5: Kadane max subarray
Approach: Running best.
Complexity: O(n)
BARC tip: Narrate brute force then optimize then edge cases before coding.
Coding Q6: Reverse a string in-place
Approach: Two pointers from ends.
Complexity: O(n)/O(1)
BARC tip: Narrate brute force then optimize then edge cases before coding.
Coding Q7: Check prime
Approach: Trial division to sqrt(n).
Complexity: Handle n<2
BARC tip: Narrate brute force then optimize then edge cases before coding.
Coding Q8: Valid parentheses
Approach: Stack matching.
Complexity: O(n)
BARC tip: Narrate brute force then optimize then edge cases before coding.
Coding Q9: Two Sum
Approach: Hash map complements.
Complexity: O(n)
BARC tip: Narrate brute force then optimize then edge cases before coding.
Coding Q10: Longest substring without repeat
Approach: Sliding window + last index.
Complexity: O(n)
BARC tip: Narrate brute force then optimize then edge cases before coding.
Deep Prep Notes for BARC
Section titled “Deep Prep Notes for BARC”How the BARC OCES/DGFS Usually Feels
Section titled “How the BARC OCES/DGFS Usually Feels”Candidates describe a paced filter where easy marks disappear if you over-invest in one hard item. For BARC, start with a three-minute scan, mark certainty levels, and protect accuracy. Languages typically include Scientific computing roles vary.
Topic Weight Hints (Candidate-Reported)
Section titled “Topic Weight Hints (Candidate-Reported)”| Area | Why it matters at BARC |
|---|---|
| GATE/exam technical depth | Primary shortlist signal |
| Core CS (OOPs/DBMS/OS) | Technical interview depth |
| Nuclear Research 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
BARC