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    Question

    How many 4-digit even numbers using digits 1 to 6

    without repetition?
    A 120 Correct Answer Incorrect Answer
    B 180 Correct Answer Incorrect Answer
    C 100 Correct Answer Incorrect Answer
    D 160 Correct Answer Incorrect Answer

    Solution

    ATQ, Last digit (even): 2,4,6 тЖТ 3 choices Remaining 3 digits: 5├Ч4├Ч3 = 60 Total = 3├Ч60 = 180

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