If you have 25 horses and no timer, how many races would you have to run to figure out the top 5 fastest horses?

Try answering the question at home on your own before looking up the answer. Try to vocalize your answer as you attempt to problem solve it to practice your communication skills. Whether you find the answer to the question before the interview is beside the point. You want to go through the whole problem-solving process, communicating clearly when this question is posed.

"To find the fastest, you need to run all 25 horses at least once, and since you can only race 5 horses at a time, you need a minimum of 25/5 5 races. Then you need to compare the winners of these races, which means a 6th race is necessary."