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    Question

    Find the unit digit of

    351.
    A 7 Correct Answer Incorrect Answer
    B 3 Correct Answer Incorrect Answer
    C 9 Correct Answer Incorrect Answer
    D 1 Correct Answer Incorrect Answer

    Solution

    Unit digit of 351┬а= unit digit of 3(4 ├Ч 12) + 3┬а= unit digit of 33┬а= unit digit of 27 = 7

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