Advertising Intern Interview Questions

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You have 3 switches on the ground floor. For each switch there is a light bulb on the upper floor (in random order). You can switch the switches as long as you need or want, but you have to determine which switch is for which bulb. And you can go to the upper floor to check only once. How do you find out it?
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Advertising Operations Strategist

Interviewed at Google

4.4
Dec 29, 2010

You have 3 switches on the ground floor. For each switch there is a light bulb on the upper floor (in random order). You can switch the switches as long as you need or want, but you have to determine which switch is for which bulb. And you can go to the upper floor to check only once. How do you find out it?

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