Quiz about Period 1 and 4 Geometric Sequences

Question 1

The next term of the sequence 2,4,8,16 is

Accepted Answer

32

Answer

64

Answer

108

Answer

20

Question 2

Is the given sequence geometric?

Accepted Answer

No

Answer

Yes

Answer

Cannot be determined

Question 3

Is the given sequence geometric?

Accepted Answer

No

Answer

Yes

Answer

Cannot be determined

Question 4

Is the given sequence geometric?

Accepted Answer

No

Answer

Yes

Answer

Cannot be determined

Question 5

Is the given sequence geometric?

Accepted Answer

No

Answer

Yes

Answer

Cannot be determined

Question 6

The next term of the sequence 2,4,8,16 is

Accepted Answer

32

Answer

64

Answer

108

Answer

20

Question 7

Is the given sequence geometric?

Accepted Answer

No

Answer

Yes

Answer

Cannot be determined

Question 8

What is the common ratio for the sequence:
28, 14, 7, 3.5...

Accepted Answer

1/2

Answer

2

Answer

-14

Answer

-7

Question 9

The n^th term of a geometric sequence is given by ...

Accepted Answer

Option A is correct

Answer

B.

Answer

C.

Answer

D.

Question 10

Find an explicit rule for the nth term of the sequence.

Accepted Answer

a_n= -2(4)^n-1

Answer

a_n= -2(4)ⁿ

Answer

a_n= 2(-4)^n-1

Answer

a_n= 2(4)^n-1

Question 11

Write a recursive formula for the following sequence:

16,8, 4, 2,...

Accepted Answer

a₁=16

a_n=a_n-1 (1/2)

Answer

a₁=16

a_n=a_n-1 (2)

Answer

a₁=16

a_n=a_n-1 + (1/2)

Answer

a₁=16

a_n=a_{n-1 +} (2)

Question 12

Use the formula S_n to find the sum of the first five terms of the geometric sequence.

Accepted Answer

22

Answer

2/3

Answer

18

Answer

21

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