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Inventions Exam Prep: Certification Test 90

Adding machine MCQs App Download & PDF e-Book - 90

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MCQ: 90

In which one of the following year, adding machine was patented?

  1. 1642
  2. 1657
  3. 1643
  4. 1645
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Adding machine Exam Prep: Inventions App & eBook MCQs

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8th Class Science Test Questions

8th Class Science Quiz with Answers