Mathematics

9th -

12thgrade

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Combinatorics

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9 questions

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  • 1. Multiple Choice
    1 minute
    1 pt

    How many four-digit numbers can be formed with the digits 1, 2, 3 and 4? (you may use a digit more than once)

    81

    256

    24

    64

  • 2. Multiple Choice
    1 minute
    1 pt

    How many different combinations of management can there be to fill the positions of president, vice president and treasurer in a club if there are 12 eligible candidates?

    9

    132

    1320

    220

  • 3. Multiple Choice
    1 minute
    1 pt

    Using each digit once, how many 3 digit even numbers can be formed with the digits 4, 5 and 6?

    2

    3

    6

    4

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