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17 November, 03:26

Find the 55th term in the following arithmetic sequence

-102, - 98, - 94, - 90

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Answers (1)
  1. 17 November, 06:51
    0
    114

    Step-by-step explanation:

    -102,-98,-94,-90 ...

    lets give the numbers a name : T,

    and the number order is 1, 2, 3, 4,5 ... n

    we can see:

    Tn=T (n-1) + 4;

    Tn=T (1) + (n-1) 4, T1 = - 102

    now n=55

    T (55) = - 102 + (55-1).4=114
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