Aptitude
Drills
BrowserStack placement papers 2025
Overview
Section titled “Overview”BrowserStack placement papers 2025. Primary filter: BrowserStack OA. Focus: DSA, systems, testing mindset.
BrowserStack 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: Pomfret is a fish B: Pomfret is not a fish C: Pomfret will not lay eggs D: Some fish lay eggs E: All fish lay eggs F: Pomfret may lay eggs.
Correct answer: ADF
Quantitative
What is arr after execution?
Correct answer: [4, 3, 2, 1]
Verbal
Fill in: She is good _____ mathematics.
Good at a subject.
Quantitative
If cost price is ₹250 and profit is 20%, selling price is:
SP = 250 × 1.2 = ₹300.
Reasoning
Statements: All birds can fly. Penguins are birds. Conclusion: Penguins can fly. Is the conclusion valid?
Correct answer: Invalid (first premise is false)
Reasoning
Complete the series: AZ, BY, CX, ?
First letter +1, second −1 → DW.
Reasoning
A walks 9 km north, then 12 km east. Distance from start is:
Right triangle → 15 km.
Verbal
Antonym of "Expand":
Expand ↔ contract.
Verbal
Antonym of "Arrival":
Arrival ↔ departure.
Reasoning
Which comes next: 5, 10, 20, 40, ?
Each term doubles → 80.
Quantitative
A can complete a work in 12 days, B in 15 days. They work together for 4 days, then A leaves. How long will B take to complete the remaining work?
Correct answer: 6 days
Quantitative
A man can row 6 km/h in still water. If the river flows at 2 km/h, how long will he take to row 12 km upstream?
Speed in still water = 6 km/h Speed of stream = 2 km/h Upstream speed = 6 - 2 = 4 km/h Time = Distance/Speed = 12/4 = 3 hours
Quantitative
If the sum of three consecutive integers is 72, what is the smallest of these integers?
Let the integers be x, x+1, and x+2. x + (x + 1) + (x + 2) = 72 3x + 3 = 72 3x = 69 x = 23 Therefore, the integers are 23, 24, and 25.
Verbal
Problem: Choose the correct sentence: a) Neither the students nor the teacher were present b) Neither the students nor the teacher was present c) Neither the students or the teacher was present
With "neither...nor", the verb agrees with the subject closer to it. "Teacher" is singular, so "was" is correct.
Reasoning
All cats are dogs. Some dogs are rats. Conclusions: I. Some cats are rats. II. Some rats are dogs.
II follows from "some dogs are rats". I does not necessarily follow.
Your score
0/15(0%)
Review
Sample BrowserStack Questions with Solutions
Section titled “Sample BrowserStack Questions with Solutions”Practice-style questions (not leaked live papers).
Coding Practice
Section titled “Coding Practice”Coding Q1: Check prime
Approach: Trial division to sqrt(n).
Complexity: Handle n<2
BrowserStack tip: Narrate brute force then optimize then edge cases before coding.
Coding Q2: Valid parentheses
Approach: Stack matching.
Complexity: O(n)
BrowserStack tip: Narrate brute force then optimize then edge cases before coding.
Coding Q3: Two Sum
Approach: Hash map complements.
Complexity: O(n)
BrowserStack tip: Narrate brute force then optimize then edge cases before coding.
Coding Q4: Longest substring without repeat
Approach: Sliding window + last index.
Complexity: O(n)
BrowserStack tip: Narrate brute force then optimize then edge cases before coding.
Coding Q5: Merge intervals
Approach: Sort + merge.
Complexity: O(n log n)
BrowserStack tip: Narrate brute force then optimize then edge cases before coding.
Coding Q6: Top K frequent
Approach: Count + heap.
Complexity: O(n log k)
BrowserStack tip: Narrate brute force then optimize then edge cases before coding.
Coding Q7: Linked list cycle
Approach: Floyd tortoise-hare.
Complexity: O(1) space
BrowserStack tip: Narrate brute force then optimize then edge cases before coding.
Coding Q8: Level order traversal
Approach: BFS queue.
Complexity: O(n)
BrowserStack tip: Narrate brute force then optimize then edge cases before coding.
Coding Q9: Coin change min coins
Approach: DP unbounded.
Complexity: O(amount*coins)
BrowserStack tip: Narrate brute force then optimize then edge cases before coding.
Coding Q10: Binary search
Approach: Lo/hi mid.
Complexity: O(log n)
BrowserStack tip: Narrate brute force then optimize then edge cases before coding.
Deep Prep Notes for BrowserStack
Section titled “Deep Prep Notes for BrowserStack”How the BrowserStack OA Usually Feels
Section titled “How the BrowserStack OA Usually Feels”Candidates describe a paced filter where easy marks disappear if you over-invest in one hard item. For BrowserStack, start with a three-minute scan, mark certainty levels, and protect accuracy. Languages typically include Java, JavaScript, Python, Go.
Topic Weight Hints (Candidate-Reported)
Section titled “Topic Weight Hints (Candidate-Reported)”| Area | Why it matters at BrowserStack |
|---|---|
| DSA | Primary shortlist signal |
| Core CS (OOPs/DBMS/OS) | Technical interview depth |
| Software Testing Cloud 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
BrowserStack