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