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    Question

    These questions are based on the following set of numbers 523 224 347 758 612

    If in each number, all the digits are written in

    descending order, last digit of how many numbers thus formed will be a prime number?
    A 1 Correct Answer Incorrect Answer
    B 2 Correct Answer Incorrect Answer
    C 3 Correct Answer Incorrect Answer
    D 4 Correct Answer Incorrect Answer
    E 5 Correct Answer Incorrect Answer

    Solution

    523 224 347 758 612 532 422 743 875 621

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