Aptitude
Drills
Stripe placement papers 2025
Overview
Section titled “Overview”Stripe placement papers 2025. Primary filter: Stripe Online Assessment. Focus: Hard DSA, API/payments design, correctness.
Stripe 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
Verbal
Fill: Neither the teacher nor the students _____ present.
With neither…nor, verb agrees with nearer subject (students) → were.
Quantitative
A and B invest ₹5,000 and ₹7,000 respectively in a business. After 6 months, A withdraws ₹2,000. If the profit at the end of the year is ₹4,500, find B's share.
A's investment: 5000 × 6 + 3000 × 6 = 30,000 + 18,000 = 48,000 B's investment: 7000 × 12 = 84,000 Ratio = 48,000 : 84,000 = 4 : 7 B's share = 7/(4+7) × 4500 = 7/11 × 4500 = ₹2,863.64
Verbal
Synonym of "Hostile":
Hostile means unfriendly.
Quantitative
A number when divided by 5 leaves remainder 3. What is remainder when twice the number is divided by 5?
n = 5k+3 → 2n = 10k+6 = 5(2k+1)+1 → remainder 1.
Quantitative
A and B can complete a job in 10 and 20 days respectively. How long will it take them to complete the job together?
A's work per day = 1/10 B's work per day = 1/20 Combined work per day = 1/10 + 1/20 = 3/20 Time taken together = 20/3 = 6.67 days
Reasoning
If every letter is shifted +2 in the alphabet, DOG becomes:
Each letter +2 → FQI.
Quantitative
Two cards are drawn from a pack of 52 cards. What is the probability that both are aces?
Probability = (4/52) × (3/51) = (1/13) × (1/17) = 1/221
Reasoning
If in a code, CAT = 24 and DOG = 26, then BAT = ?
Sum of positions: B+A+T = 2+1+20 = 23.
Reasoning
Statements: All engineers are professionals. Some professionals are managers. Conclusions: I. Some engineers are managers. II. All managers are engineers.
Analyzing the statements: - All engineers are professionals (A → B) - Some professionals are managers (B → C, some) Conclusion I: Some engineers are managers - Since all engineers are professionals, and some professionals are managers, we can say some engineer
Verbal
Neither the teacher nor the students _____ present.
Verb agrees with nearer subject (students) → were.
Quantitative
Which of the following is a common protocol used for secure communication over the internet?
HTTPS (HyperText Transfer Protocol Secure) is the secure version of HTTP and is used for secure communication over the internet. It uses SSL/TLS encryption.
Verbal
"To add fuel to the fire" means:
It means worsening a conflict or situation.
Reasoning
A walks 10m North, turns right walks 5m, turns right walks 10m. Direction from start?
Correct answer: East (5m east of starting point)
Quantitative
A bank offers a loan of ₹50,000 at 8% per annum simple interest. What is the interest after 2 years?
Correct answer: ₹8,000
Reasoning
Problem: What is the value of x? Statement 1: x² = 16 Statement 2: x > 0
From statement 1: x = 4 or -4 From statement 2: x > 0 Combining both: x = 4
Your score
0/15(0%)
Review
Sample Stripe Questions with Solutions
Section titled “Sample Stripe Questions with Solutions”Practice-style questions (not leaked live papers).
Coding Practice
Section titled “Coding Practice”Coding Q1: Longest substring without repeat
Approach: Sliding window + last index.
Complexity: O(n)
Stripe tip: Narrate brute force then optimize then edge cases before coding.
Coding Q2: Merge intervals
Approach: Sort + merge.
Complexity: O(n log n)
Stripe tip: Narrate brute force then optimize then edge cases before coding.
Coding Q3: Top K frequent
Approach: Count + heap.
Complexity: O(n log k)
Stripe tip: Narrate brute force then optimize then edge cases before coding.
Coding Q4: Linked list cycle
Approach: Floyd tortoise-hare.
Complexity: O(1) space
Stripe tip: Narrate brute force then optimize then edge cases before coding.
Coding Q5: Level order traversal
Approach: BFS queue.
Complexity: O(n)
Stripe tip: Narrate brute force then optimize then edge cases before coding.
Coding Q6: Coin change min coins
Approach: DP unbounded.
Complexity: O(amount*coins)
Stripe tip: Narrate brute force then optimize then edge cases before coding.
Coding Q7: Binary search
Approach: Lo/hi mid.
Complexity: O(log n)
Stripe tip: Narrate brute force then optimize then edge cases before coding.
Coding Q8: Kadane max subarray
Approach: Running best.
Complexity: O(n)
Stripe tip: Narrate brute force then optimize then edge cases before coding.
Coding Q9: Reverse a string in-place
Approach: Two pointers from ends.
Complexity: O(n)/O(1)
Stripe tip: Narrate brute force then optimize then edge cases before coding.
Coding Q10: Check prime
Approach: Trial division to sqrt(n).
Complexity: Handle n<2
Stripe tip: Narrate brute force then optimize then edge cases before coding.
Deep Prep Notes for Stripe
Section titled “Deep Prep Notes for Stripe”How the Stripe Online Assessment Usually Feels
Section titled “How the Stripe Online Assessment Usually Feels”Candidates describe a paced filter where easy marks disappear if you over-invest in one hard item. For Stripe, start with a three-minute scan, mark certainty levels, and protect accuracy. Languages typically include Ruby, Java, Python, Go.
Topic Weight Hints (Candidate-Reported)
Section titled “Topic Weight Hints (Candidate-Reported)”| Area | Why it matters at Stripe |
|---|---|
| Hard DSA | Primary shortlist signal |
| Core CS (OOPs/DBMS/OS) | Technical interview depth |
| Payments Infrastructure 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
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