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The MCQ: The first mechanical calculator was invented by; "Calculators MCQs" App Download [Free] with answers: sir robert noyce, sir blaise pascal, dr raymond lemieux, and sir thomas edison for online elementary school classes. Solve Inventions and Inventors Quiz Questions, download Google e-Book (Free Chapter) for school certificate.
The first mechanical calculator was invented by
In which one of the following year mechanical calculators were invented?
In which country the first mechanical calculator was invented?
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