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Quantitative Analyst Intern Interview Questions
10,159 quantitative analyst intern interview questions shared by candidates
What was something different that you had done on the job.
What is it that you want from this job and why would you be a good candidate?
How do you go about building relationships across teams?
You and your friend play a betting game where you start with 1 dollar and your friend starts with N dollars, where N is a natural number. Each round, you 'flip a fair coin for the shortest current stack' (e.g. you win the 'shortest stack amount' from your friend if it lands Heads and your friend wins the 'shortest stack amount' from you if it lands Tails). You buy back in for an extra $1 every time you lose your current stack to your friend and the game continues, but if your friend loses all of his stack to you, he doesn't buy back in and the game ends. (a) What is the expected number of rounds that this game will last? (b) What is the expected amount of profit that you walk away with? (c) What's the expected amount of times you expect to buy back in for an iteration of the game for very large N? (d) In the real world, a U.S. penny has a ~51% chance of landing the same side-up it was before it was flipped up into the air, but an ~80% chance of landing Tails if it's spun from its edge on a tabletop. So, let's change the game from now on so you can also use your real-life U.S. penny instead (if it somehow lands on its edge, just flip/spin it again): you either flip the coin with the Heads side initially facing up (51% Heads), or with the Tails side initially facing up (49% Heads), or you can spin it on a tabletop (20% Heads). Or, you can stick with your perfectly fair 50% Heads coin whenever too. Your objective is always to maximize your expected profit. What is your optimal strategy, and what is the expected amount of profit that you walk away with? (e) The game also ends when have lost N dollars yourself (you lose when you're down N dollars from your original 1 dollar buy-in), in which case your friend wins. What is the minimum probability of landing Heads that the coin must have for you and your friend to have equal chances of winning the game?
How would your friends describe you in 3 words? (This was one of the more normal questions they asked.)
What are the defining factors that drive you?
You have two eggs and you can drop them from a 100 story building at any floor. What method can you use to find the lowest level at which the eggs would break when dropped?
discrete math questions, probability questions, proofs
Quick sql code to get values from 2 different tables into one table.
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