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Geometric Series Review

Authored by Anthony Clark

Mathematics

12th Grade

CCSS covered

Geometric Series Review
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15 questions

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1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Find the common ratio: 4, -16, 64, -256, ...

r = -4

r = 2

r = -2

r = 4

Tags

CCSS.HSF.BF.A.2

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What is the common ratio for the following sequence: -3, 15, -75, 375, ...

12

-1/5

-5

3

Tags

CCSS.HSF.BF.A.2

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

If the rule for finding an of a geometric sequence is

an = 10(2)n-1 . Then what is the common ratio(r) of the sequence?

2

10

20

2n

Tags

CCSS.HSF.BF.A.2

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What is the 9th term in a geometric sequence with a common ratio of 2 and a first term of 3?

384

768

1,536

27

Tags

CCSS.HSF.BF.A.2

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What is the twelfth term in the sequence 3, -6, 12, -24. . . ? (hint: write the general rule and then find the term when n=12)

-2,048

6,144

-6,144

-531,441

Tags

CCSS.HSF.BF.A.2

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Write the general rule for the geometric sequence 5, 45, 405, ...?

an = an-1 x 5

an = 5(9)n-1

an = 9(5)n-1

an = 5 + (n-1)9

Tags

CCSS.HSF.BF.A.2

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What is the general rule for the geometric sequence where the 8th term is 6,561 and r = 3?

Tags

CCSS.HSF.BF.A.2

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