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    digits


    There are 24 four-digit numbers that can be formed from the digits 1, 2, 3, and 4
    using each digit once and only once. What is the sum of these 24 numbers?

    a. 66,660 b. 66,600 c. 66,000 d. 65,260 e. None of these

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  2. #2
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    Quote Originally Posted by sri340 View Post

    There are 24 four-digit numbers that can be formed from the digits 1, 2, 3, and 4
    using each digit once and only once. What is the sum of these 24 numbers?

    a. 66,660 b. 66,600 c. 66,000 d. 65,260 e. None of these
    1+2+3+4 = 10

    6 sets of 10 for each place digit (units, 10's, 100's, and thousands ...

    60+600+6000+60000
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