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Geometric Series
Test Description: Find the sum of a geometric series.
Instructions: Answer all questions to get your test result.
1) 3 - 6 + 12 - 24..., n = 6
A
1
B
-63
C
-51
D
-61
2) 2 + 10 + 50 + 25-..., n = 9
A
976,562
B
789,660
C
-2
D
664,052
3) 2 + 12 + 72 + 432..., n = 8
A
559,176
B
-5
C
479,415
D
671,846
4) 1 + 6 + 36 + 216..., n = 6
A
-5
B
9,331
C
10,520
D
10,685
5) 4 + 12 + 36 + 108..., n = 8
A
-2
B
13,120
C
14,173
D
12,030
6) a1 = 1, r = 5, n = 7
A
-4
B
19,531
C
22,061
D
22,325
7) a1 = 2, r = 5, n = 9
A
-2
B
790,170
C
976,562
D
650,211
8) a1 = 1, r = -2, n = 8
A
-80
B
-74
C
-85
D
3
9) a1 = 3, r = -4, n = 7
A
5
B
10,098
C
9,831
D
11,405
10) a1 = -1, r = 3, n = 8
A
-3,280
B
-3,435
C
2
D
-3,009
*select an answer for all questions
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