Aptitude
Drills
Zerodha placement papers 2025
Overview
Section titled “Overview”Zerodha placement papers 2025. Primary filter: Zerodha Assignment / Interviews. Focus: DSA, systems, markets curiosity.
Zerodha 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
If Thursday was the day after the day before yesterday five days ago, what is the least number of days ago when Sunday was three days before the day after tomorrow?
Correct answer: Requires careful day calculation (typically 2-4 days ago)
Quantitative
If the sum of the first 50 natural numbers is S, what is the value of S?
Sum of first n natural numbers = n(n + 1)/2 For n = 50: S = 50 × 51 / 2 = 1275
Reasoning
Series: 1, 4, 9, 16, 25, ?
Perfect squares → 36.
Verbal
Problem: Choose the correct sentence: a) She likes reading, writing, and to dance b) She likes reading, writing, and dancing c) She likes to read, writing, and dancing
Parallel structure requires same form: all gerunds or all infinitives. Option b maintains parallelism with all gerunds.
Quantitative
The average of 6 numbers is 25. If one number is 30, what is the average of the remaining 5 numbers?
Correct answer: 24
Reasoning
If in a certain code, FLOOR is written as EKNQQ, how is TABLE written?
Each letter −1: T→S, A→Z, B→A, L→K, E→D → SZAKD.
Verbal
Choose the correct form: "Neither the teacher nor the students _____ present."
Correct answer: were
Quantitative
A mixture contains milk and water in the ratio 5:3. If 10 liters of water is added, the ratio becomes 5:4. Find the quantity of milk in the mixture.
Let milk = 5x, water = 3x After adding 10 liters water: Milk = 5x, Water = 3x + 10 Ratio: 5x/(3x + 10) = 5/4 20x = 5(3x + 10) 20x = 15x + 50 5x = 50 x = 10 Quantity of milk = 5x = 5 × 10 = 50 liters
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.
Reasoning
How many 9s are there between 1 and 100?
9,19,29,39,49,59,69,79,89,90–99 → 20 nines.
Verbal
A bouquet of flowers _____ on the table.
Bouquet is singular.
Quantitative
If "CAT" is coded as "3120", "DOG" is coded as "4157", then how is "RAT" coded?
Pattern analysis: - C = 3, A = 1, T = 20 → "3120" - D = 4, O = 15, G = 7 → "4157" Pattern: Position of letter in alphabet For "RAT": - R = 18 - A = 1 - T = 20
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
Reasoning
If P means +, Q means −, R means ×, then 18 R 2 P 6 Q 4 = ?
18 × 2 + 6 − 4 = 36 + 6 − 4 = 38.
Verbal
There are two pipes in a tank. Pipe A is for filling the tank and pipe B is for emptying the tank. If A can fill the tank in 10 hours and B can empty the tank in 15 hours then find how many hours will it take to completely fill a half empty tank?
Correct answer: 15 hours
Your score
0/15(0%)
Review
Sample Zerodha Questions with Solutions
Section titled “Sample Zerodha Questions with Solutions”Practice-style questions (not leaked live papers).
Coding Practice
Section titled “Coding Practice”Coding Q1: Coin change min coins
Approach: DP unbounded.
Complexity: O(amount*coins)
Zerodha tip: Narrate brute force then optimize then edge cases before coding.
Coding Q2: Binary search
Approach: Lo/hi mid.
Complexity: O(log n)
Zerodha tip: Narrate brute force then optimize then edge cases before coding.
Coding Q3: Kadane max subarray
Approach: Running best.
Complexity: O(n)
Zerodha tip: Narrate brute force then optimize then edge cases before coding.
Coding Q4: Reverse a string in-place
Approach: Two pointers from ends.
Complexity: O(n)/O(1)
Zerodha tip: Narrate brute force then optimize then edge cases before coding.
Coding Q5: Check prime
Approach: Trial division to sqrt(n).
Complexity: Handle n<2
Zerodha tip: Narrate brute force then optimize then edge cases before coding.
Coding Q6: Valid parentheses
Approach: Stack matching.
Complexity: O(n)
Zerodha tip: Narrate brute force then optimize then edge cases before coding.
Coding Q7: Two Sum
Approach: Hash map complements.
Complexity: O(n)
Zerodha tip: Narrate brute force then optimize then edge cases before coding.
Coding Q8: Longest substring without repeat
Approach: Sliding window + last index.
Complexity: O(n)
Zerodha tip: Narrate brute force then optimize then edge cases before coding.
Coding Q9: Merge intervals
Approach: Sort + merge.
Complexity: O(n log n)
Zerodha tip: Narrate brute force then optimize then edge cases before coding.
Coding Q10: Top K frequent
Approach: Count + heap.
Complexity: O(n log k)
Zerodha tip: Narrate brute force then optimize then edge cases before coding.
Deep Prep Notes for Zerodha
Section titled “Deep Prep Notes for Zerodha”How the Zerodha Assignment / Interviews Usually Feels
Section titled “How the Zerodha Assignment / Interviews Usually Feels”Candidates describe a paced filter where easy marks disappear if you over-invest in one hard item. For Zerodha, start with a three-minute scan, mark certainty levels, and protect accuracy. Languages typically include Go, Python, JavaScript.
Topic Weight Hints (Candidate-Reported)
Section titled “Topic Weight Hints (Candidate-Reported)”| Area | Why it matters at Zerodha |
|---|---|
| DSA | Primary shortlist signal |
| Core CS (OOPs/DBMS/OS) | Technical interview depth |
| Discount Brokerage, FinTech 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
Zerodha