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Arithmetic/Geometric Series
Test Description: Find the sum of an arithmetic or geometric series.
Instructions: Answer all questions to get your test result.
1) Find the sum of the arithmetic series: 8, 13, 18, 23, 28
A
94
B
180
C
90
D
82
2) Find the sum of the arithmetic series: 11, 13, 15, 17, 19
A
296
B
75
C
47
D
111
3) Find the sum of the arithmetic series: 4, 14, 24, 34
A
77
B
92
C
76
D
75
4) Find the sum of the arithmetic series: a1 = 14, an = 98, n = 15
A
1214
B
3354
C
1680
D
840
5) Find the sum of the arithmetic series: a1 = 8, an = 73, n = 14
A
1120
B
1134
C
567
D
647
6) Find the sum of the geometric series: -2 + 4 - 8 + 16..., n = 7
A
-456
B
-97
C
-86
D
-89
7) Find the sum of the geometric series: -2 - 12 - 72 - 432..., n = 6
A
400
B
-18662
C
-16386
D
-17354
8) Find the sum of the geometric series: -2 - 12 - 72 - 432..., n = 8
A
-932013
B
-784663
C
1500
D
-671846
9) Find the sum of the geometric series: a1 = 3, r = -3, n = 10
A
-5000
B
-45576
C
-44286
D
-50350
10) Find the sum of the geometric series: a1 = -4, r = 5, n = 8
A
-493617
B
-436147
C
160000
D
-390624
*select an answer for all questions
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