Susquehanna International Group Interview Question: Five guys, all of different a... | Glassdoor

Interview Question

Assistant Trader Intern Interview(Student Candidate) Bala Cynwyd, PA

Five guys, all of different ages enter a bar and take a

  seat at a round table. What is the probability that they are seated in ascending order of age? (clockwise or counter-clockwise)

Interview Answer

2 Answers


5! or 120 total seating positions. 5 possible starting positions because the table is round. 2 possible directions.

This makes 10 arrangements that fulfill the prompt, ie P = 10/5! = 1/12

Interview Candidate on Feb 18, 2011

Make the youngest person a fixed point. The second youngest can sit on 2 seats in 4 remaining seats (left or right of the youngest). The third youngest can sit on 1 seat in the 3 remaining because we defined ordered by previous step. Fourth youngest can sit on 1/2. Last person 1/1


Anonymous on Nov 9, 2011

Add Answers or Comments

To comment on this, Sign In or Sign Up.