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29 March, 03:40

Find the sum of nth term of the series 5+7+13+31 ...

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Answers (2)
  1. 29 March, 04:04
    0
    The sequence increases in increments of the sum of the term before and the increment for the term before to the current term. For example, 7+5 is 13 and 13+5 is 18 hence the next term is 13+18 is 31. The next term is thus 80. It's easier to understand if you draw out the term and the number it increases by
  2. 29 March, 04:06
    0
    2n+3

    Step-by-step explanation:

    formula=nd+t1-d

    n is the term, t1 is term one and d is diffrence between the first two terms

    2n+5-2

    =2n+3
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