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6 April, 13:17

What is the sequence for 6,12,18,24

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  1. 6 April, 15:57
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    an = 6n

    Step-by-step explanation:

    6, 12, 18, 24

    Take the 2nd number minus the first number, 3rd minus the second, etc

    12-6 = 6

    18-12 = 6

    24-18 = 6

    The common difference is 6

    The formula for an arithmetic sequence is

    an = a1+d (n-1)

    where a1 is the first term

    d is the common difference

    n is the term number

    an = 6+6 (n-1)

    Distributing

    = 6+6n-6

    = 6n
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