150 Most Frequently Asked Questions On Quant Interviews Page

Customers arrive at a bank at a rate of 10 per hour. What is the probability that nobody arrives in the next 15 minutes?

Should you switch doors? (Classic, but still asked to test basic intuition).

How many times must you shuffle a deck of 52 cards to make it truly random? 150 Most Frequently Asked Questions On Quant Interviews

Quants must implement their ideas. Expect "LeetCode style" questions focusing on efficiency. What is the Big O complexity of QuickSort?

You have 8 balls; one is heavier. How many weighings on a balance scale do you need to find it? Customers arrive at a bank at a rate of 10 per hour

Most people fail on simple probability, not complex ML.

With the rise of "Alpha Researchers," statistical significance and ML theory are now standard topics. Explain a p-value to a non-technical person. (Classic, but still asked to test basic intuition)

If Pipe A fills a tank in 3 hours and Pipe B in 5, how long does it take together?