Qa Test Engineer Interview Questions

51,718 qa test engineer interview questions shared by candidates

You are outside a room. Inside the room there are two light bulbs. One light bulb is on all the time, the other light bulb only turns on when you open the door. How do you determine which light bulb is on all the time?
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QA Engineer

Interviewed at Palantir Technologies

3.7
Mar 1, 2011

You are outside a room. Inside the room there are two light bulbs. One light bulb is on all the time, the other light bulb only turns on when you open the door. How do you determine which light bulb is on all the time?

In a corridor with 100 lockers you pass the first time and open each locker. Then you pass the second time and you close each second locker. Subsequently, you pass the third time a toggle the state of each third locker, then you pass again each fourth, and so on... you repeat 100 times. How many lockers are open at the end.
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Quality Analyst

Interviewed at Goldman Sachs

3.7
May 10, 2012

In a corridor with 100 lockers you pass the first time and open each locker. Then you pass the second time and you close each second locker. Subsequently, you pass the third time a toggle the state of each third locker, then you pass again each fourth, and so on... you repeat 100 times. How many lockers are open at the end.

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