Inventions Practice Tests
Inventions Online Tests
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The MCQ: First mechanical calculator was invented by; "Calculators" App Download (Free) with answers sir robert noyce, sir blaise pascal, dr raymond lemieux and sir thomas edison for online school and college. Solve inventions and inventors quiz questions, download Google eBook (Free Sample) for free online courses.
MCQ 1: The first mechanical calculator was invented by
MCQ 2: In which one of the following year mechanical calculators were invented?
MCQ 3: In which country the first mechanical calculator was invented?
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