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    Question

    Which among of the following counting device was

    developed in China had rectangular wooden frame and beads on it?
    A Punched card system Correct Answer Incorrect Answer
    B Napier's Bone Correct Answer Incorrect Answer
    C Abacus Correct Answer Incorrect Answer
    D Pascaline Correct Answer Incorrect Answer
    E Mark I Computer Correct Answer Incorrect Answer

    Solution

    The correct answer is C

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