- A A mechanical doll that could write holding a quill pen
- B A calculating instrument used for solving problems in proportion, trigonometry, multiplication and division
- C A hand-operated analog computer for doing multiplication and division
- D An instrument for calculating the area of a closed figure
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Answer:
C
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Explanation: A hand-operated analog computer for doing multiplication and division. The slide rule was invented around 1620-1630 by the English clergyman William Oughtred.
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