# Difficult Interview Questions

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### Associate at Novantas

Jan 20, 2010
 “You have 15 horses that run various speeds. You own a race track on which you can race the horses, and this track holds a maximum of 5 horses per race. If you have no stopwatch or other means of...”

### Trader Assistant at Jane Street

Jul 20, 2010
 “You are trying to get to Orlando, which is 800 miles away. You have 2500 apples, and you drive a truck which can hold a thousand at a time. You have unlimited gas, can take as many trips as you'd...”

### Summer Analyst at Goldman Sachs

May 8, 2011
 “13 cubed”

### Inventory Specialist at Apple

Mar 8, 2010
 “What was the hardest thing you ever had to do in your prior work experience?”

### Senior Software Developer at Tower Research Capital LLC

Jun 7, 2010
 “Another was a puzzle: A king orders 100 bottles of wine for a celebration. A courtier who's angry with the king over something puts poison in one of those bottles. The king has a way of identifying...”

### Financial Software Developer at Bloomberg L.P.

Jan 30, 2010
 “You have 25 horses, and you want to know which are the top 3 fastest, but you don't have a stopwatch. You can race the horses, but the track is only big enough to fit 5 horses at a time. How do you...”

### Science Teacher at Blackfoot School District

Jun 30, 2009
 “Is it important to you to be friends with your students?”

### Global Customer Support Representative at LinkedIn

Jan 7, 2012
 “You’re in a room with three light switches, each of which controls one of three light bulbs in the next room. Your task is to determine which switch controls which bulb. All lights are initially off...”

### Software Engineer II at eBay

Mar 28, 2011
 “You are given a predefined function which generates random number from 1 to 5. You need to use this function and create another function which will generate random number from 1 to 7. Now most...”

### QA Software Engineer at eBay

Feb 8, 2011
 “You have five bottles with pills. One bottle has 9 gram pills, the others have 10 gram pills. You have a scale that can only be used once. How can you find out which bottle contains the 9 gram...”
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