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    Question

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