1. In the geometric sequence 1,
5' 25' 125
what is the common ratio?
A 1
B. 5
С 25
2. What is the next term of the geometric sequence 64, -16, 4,

A. 1
B4
C -1
D. 0
3 An r in the geometric sequence is referred to a common ratio, which among the following best
describes it?
A It is the fixed amount multiplied.
B. It cannot be equal to zero.
C. To find the common ratio, divide the second term by the first
D D All of the above
4. Which of the following sequences is geometric?
A
1 2 3
-3, 0, 3, 6, ... B. 1,
C. 2, 4, 8, 16, ... D 0.1, 0.3, 0.5, 0.7
5. If three geometric means are inserted between 2 and 162, what is the third geometric mean?
A 3
B. 6
C 18
D 54
6. What is the sum of the first twenty-five terms of 5,- 5,5,- 5,5,...?
A 0
B. 5
C. -5
D. -1
7. If 32, 16, 8, 4, ... is a geometric sequence, what is the common ratio?
A
B. r = 2
C r = 2
D r = 4
-8. Given the sequence 4, 8, 16, 32, If the nth term is 1024, what is n?
A 6
B. 7
C 8
D. 9
9. What is the 8th term in the geometric sequence 2, 8, 32, 128..?
A 32768 B. 512
C 2048
D 8192
10. Find the seventh term of a geometric sequence when the term is 27 and the
common ratio is 3
A 2 187
В. 6 561
C. 19 683
D59 049
1 1 1 1
11. What is the sum to infinity of
2' 4' 8'16
A. O
B. 1
C. 2
D. does not exist
12. Find the sum of the first five terms of the geometric sequence whose first term is 3 and the
common ratio is -3.
A 180
B. 181
C.
182
D. 183
13. What kind of sequence is 2, 8, 32, 128, 512?
A arithmetic B. geometric C. finite
D harmonic
14. If three geometric means is inserted between 3 and 243, what is the first geometric mean?
A. 3
B. 9
C. 27
D. 81
15. What is Ss of the geometric sequence whose first term is 1 and a common ratio of 3?
A. 121
B.321
C. 112
D.211​
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