Developer Interview Questions

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A logic question: in a room there are 3 lightbulbs; you are outside of the room and can't see inside; in front of you are 3 switches connected to the lightbulbs. What do you do to know which switch activates which lightbulb if you're only allowed in the room once? A technical question: you have 5 minutes to describe to me how to make a fuel level detection system for a tank. Here's a pen and some paper; describe it to me in any way you want using any terms you want. (he was looking to see if you're smart enough and think logically enough to design such a thing even if you don't really know anything about it beforehand)
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Software Developer

Interviewed at Continental

3.9
Feb 20, 2017

A logic question: in a room there are 3 lightbulbs; you are outside of the room and can't see inside; in front of you are 3 switches connected to the lightbulbs. What do you do to know which switch activates which lightbulb if you're only allowed in the room once? A technical question: you have 5 minutes to describe to me how to make a fuel level detection system for a tank. Here's a pen and some paper; describe it to me in any way you want using any terms you want. (he was looking to see if you're smart enough and think logically enough to design such a thing even if you don't really know anything about it beforehand)

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