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