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    Question

    There is a certain number of articles in the warehouse.

    Each article is given distinct codes which is either a single digit number or two consecutive single digit numbers. Find the least number of digits to be used if there are 10 articles in the warehouse.
    A 5 Correct Answer Incorrect Answer
    B 6 Correct Answer Incorrect Answer
    C 4 Correct Answer Incorrect Answer
    D 3 Correct Answer Incorrect Answer
    E 9 Correct Answer Incorrect Answer

    Solution

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