Goldman Sachs

Interview Question

Summer Internship - Quantitative Investment Strategies Interview(Student Candidate) New York, NY

Suppose that you have a fair coin. You start with $0. You

  win 1$ each time you get a head and loose $1 each time you get tails. Calculate the probability of getting $2 without getting below $0 at any time.

Interview Answer

2 Answers


Draw a tree to have an idea of how to compute the probability. The flips are all independent with each other.

Interview Candidate on Apr 10, 2012


Vipin Agrawal on Sep 2, 2013

Add Answers or Comments

To comment on this, Sign In or Sign Up.