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    Question

    How many 4-digit numbers can be formed using digits 1 to

    6 without repetition, such that the number is even?
    A 125 Correct Answer Incorrect Answer
    B 180 Correct Answer Incorrect Answer
    C 165 Correct Answer Incorrect Answer
    D 145 Correct Answer Incorrect Answer

    Solution

    ATQ, Even number тЖТ last digit must be even тЖТ choices: 2, 4, 6 тЖТ 3 choices Remaining 3 digits from 5 others тЖТ 5 ├Ч 4 ├Ч 3 = 60 Total = 3 ├Ч 60 = 180

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