Junior Engineer Interview Questions

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You are on the first floor of two-level building. On the second floor, there are three lamps while all the switches are on the first floor. How can you define which switch is associate with the lamps on the second floor with only going to the second floor once?
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Software Engineer (Junior Programmer)

Interviewed at Mitrais

4.5
Jun 9, 2015

You are on the first floor of two-level building. On the second floor, there are three lamps while all the switches are on the first floor. How can you define which switch is associate with the lamps on the second floor with only going to the second floor once?

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