Question

    Find the unit digit of 3323ย + 4235

    A 7 Correct Answer Incorrect Answer
    B 8 Correct Answer Incorrect Answer
    C 5 Correct Answer Incorrect Answer
    D 4 Correct Answer Incorrect Answer

    Solution

    Unit digit of 3323ย = Unit digit of 34 X 5 + 3ย = Unit digit of 33ย = Unit digit of 27 = 7

    Unit digit of 4235ย = Unit digit of 24 X 8 + 3ย = Unit digit of 23ย = 8

    Required unit digit = Unit digit of (8 + 7) = Unit digit of 15 = 5

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