4 thoughts on “Sequences – 10

  1. If the 2nd level becomes a GP ?

    say, a sequence -1, 5, 13, 25, 45….
    so the 1st level becomes -6-8-12-20-
    and the 2nd is -2-4-8-

    Also, what pattern can be formed for this sequence ?

    Thanks 🙂

    • What have you taken the 2 in (2^n) as, the first term of the GP or the common ratio ?
      Can we generalise for a GP ?


      • I haven’t solved it mathematically i.e. rigorously; I have used trial and error. Solving mathematically would take way too much time from an exam point of view – in that situation I would use the answer choices (I have covered a couple of similar questions in the paperless series of posts…)


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