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Millennium
Interview Questions
List of Real Interview Questions from
Millennium
90 Questions
Updated 2026
Quant Interview Questions
90Â
Questions
5
How can you prevent gradient instability caused by the sigmoid function?
Software Engineer Interview
20
Explain the statement of Fermat's theorem.
Quantitative Researcher Intern Interview
19
Design a game using a fair coin such that the probability of winning is p, where 0 < p < 1.
Quantitative Researcher Intern Interview
18
Is a tuple inside a list immutable or not?
Quantitative Researcher Intern Interview
17
What is the difference between a dict, a list, and a tuple in Python?
Quantitative Researcher Intern Interview
16
Write an ordinary least squares (OLS) linear regression implementation in Python using numpy.
Quantitative Researcher Intern Interview
12
Explain the statement of Fermat's theorem.
Quantitative Researcher Intern Interview
13
What are the limitations of the local volatility model?
Quantitative Analyst Interview
14
How could you apply natural language processing (NLP) techniques to determine whether a stock will outperform the market or not?
Quant Researcher Interview
15
You have a 6-hour case exercise with the following tasks: 1) Download the latest ADV reports from the SEC website and parse them to extract information about various funds, including name, address, phone number, and number of employees. 2) Implement error logging and write log entries to a local SQLite file. 3) Clean and transform the data to extract insights such as fund size by assets under management (AUM) and number of employees. 4) Create an API to expose the processed data. 5) Write mock tests for the API. 6) Create visualizations based on the extracted data.
Data Engineer Interview
11
Design a game using a fair coin in which the probability of winning is exactly p, for some 0 < p < 1.
Quantitative Researcher Intern Interview
10
What is the difference between a dict, a list, and a tuple in Python?
Quantitative Researcher Intern Interview
9
Implement Ordinary Least Squares (OLS) regression in Python using NumPy.
Quantitative Researcher Intern Interview
8
Write a recursive function to compute the nth Fibonacci number.
Software Developer Interview
7
Given a product table [ProductId, Name] with records [1, Apple], [2, Orange], [3, Pear] and an order table [ProductId, Quantity] with records [1, 7], [2, 8], write the SQL query to produce [ProductId, Name, Quantity] where missing quantities are shown as 0. The output should be: [1, Apple, 7], [2, Orange, 8], [3, Pear, 0].
Software Engineer Interview
5
How can you prevent gradient instability caused by the sigmoid function?
Quantitative Researcher Interview
6
Explain Java collections and how you use them.
Software Engineer Interview
4
Implement a recursive function to compute the nth Fibonacci number.
Software Developer Interview
2
What is the difference between a list and a set in programming?
Intern Interview
3
Given a Product table with columns [ProductId, Name] and records [1, Apple], [2, Orange], [3, Pear], and an Order table with columns [ProductId, Quantity] and records [1, 7], [2, 8], what SQL query produces [ProductId, Name, Quantity] such that the result is [1, Apple, 7], [2, Orange, 8], [3, Pear, 0] (with 0 for products not in the Order table)?
Software Engineer Interview
1
Can you explain the difference between inner and outer joins?
Software Engineer Interview
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