Ask Question
29 August, 11:39

How many terms are in the following sequence?

645700815, ..., 45, 15,5

17

18

19

16

+2
Answers (1)
  1. 29 August, 11:46
    0
    18.

    Step-by-step explanation:

    It is a geometric sequence.

    The common ration is 1/3.

    The nth term of a GS is a1 r (n-1)

    The first term of this GS is 645700815.

    Substituting to see which term is 5:

    Try 16:

    16th term = 645700815 * (1/3) ^ (16-1)

    = 45

    18th term = 645700815 * (1/3) ^ (18-1)

    = 5.

    So there are 18 terms.
Know the Answer?
Not Sure About the Answer?
Get an answer to your question ✅ “How many terms are in the following sequence? 645700815, ..., 45, 15,5 17 18 19 16 ...” in 📙 Mathematics if there is no answer or all answers are wrong, use a search bar and try to find the answer among similar questions.
Search for Other Answers