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Chapter 12: Q. 99 (page 825)

Make up a geometric sequence. Give it to a friend and ask for its 20th term.

Short Answer

Expert verified

The sequence can be given as 5,5,5,......

And the 20th term is 5

Step by step solution

01

G1ven information

We have to give a sequence

02

Give the sequence and find its 20th term

We given the sequence as 5,5,5,.....

Here the first term of the sequence is 5 and the common ratio is 1

Hence the 20th term can be given as

a20=a1r19a20=5(1)19a20=5

03

Conclusion

The sequence can be given as 5,5,5,......

And the 20th term is 5.

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Most popular questions from this chapter

In Problems 51–66, determine whether each infinite geometric series converges or diverges. If it converges, find its sum.

∑k=1∞813k-1

In Problems 51–60, write out each sum.

∑k=1nk+2

In Problems 37–50, a sequence is defined recursively. Write down the first five terms.

a1=-1;a2=1;an=an-2+nan-1

In Problems 61–70, express each sum using summation notation.

3+322+333+.....+3nn

In Problems 17–28, write down the first five terms of each sequence.

an=nn+2
See all solutions

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