Project Implementation Interview Questions

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You have two hourglasses: one that times exactly 4s and one that times exactly 7s. Once you start an hourglass, you can't stop it "in the middle" or make any guesses about how much time is left until it's completely done. How can you time exactly 9s?
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Implementation Consultant

Interviewed at Fast Enterprises

3.7
May 4, 2016

You have two hourglasses: one that times exactly 4s and one that times exactly 7s. Once you start an hourglass, you can't stop it "in the middle" or make any guesses about how much time is left until it's completely done. How can you time exactly 9s?

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