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Google's interview questions are notoriously hard, but the internet giant is hardly the first employer known for impossible interview questions.
When hiring at his laboratory at Menlo Park, Thomas Edison demanded that his employees have a diverse education and knowledge base.
Applicants reportedly had to get right at least 90 percent of the questions. We've included 20 questions — which means you can get only two wrong.
To see the answers, highlight the black bar below each image with your cursor.
What is the first line in the Aeneid?
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Arma virumque cano, which means "I sing of arms and of a man"
Questions taken fromThe Idea Hunter
Who composed Il Trovatore?
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Giuseppe Verdi
Questions taken from The Idea Hunter
Which countries supply the most mahogany?
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Brazil and Bolivia
Questions taken from The Idea Hunter
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