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WorksheetsCA Quiz 7 - Arithmetic & Geometric Sequences
Total questions: 10
Worksheet time: 3hrs 30mins
Name
Class
Date
1.
What are the next 3 terms in this sequence of terms? 3, 7, 11, 15
a)
18, 22, 26
b)
19, 21, 23
c)
19, 23, 27
d)
18, 21, 24
2.
Find the 22nd term. a1 = 10, d = 5
a)
115
b)
200
c)
10
d)
220
3.
What is the common ratio for the sequence:
28, 14, 7, 3.5...
28, 14, 7, 3.5...
a)
2
b)
1/2
c)
-14
d)
-7
4.
Find the common ratio: 64, -16, 4, -1, ...
a)
r = -8
b)
r = -1/4
c)
r = -4
d)
r = 4
5.
Find the next three terms: 4, 12, 36, 108, ...
a)
324, 972, 2916
b)
972, 2916, 8748
c)
405, 1215, 3645
6.
Write the rule for this sequence:
125, 25, 5, ....
a)
an = (125)(5)(n-1)
b)
an = 125(1/5)(n-1)
c)
an = 625(5)(n-1)
d)
an = 125 + 5n
7.
Is this sequence arithmetic, geometric, or neither?
1,2,4,7,11,16,22,...
1,2,4,7,11,16,22,...
a)
arithmetic
b)
geometric
c)
neither
d)
none of the above
8.
Write a rule for this arithmetic sequence:
2, 8, 14, ...
a)
an = 2 + 6n
b)
an = -6 + 6n
c)
an = 6n - 4
d)
an = 4 - 6n
9.
Evaluate the arithmetic series described:
2 + (-2) + (-6) + (-10)..., S10
2 + (-2) + (-6) + (-10)..., S10
a)
-160
b)
-328
c)
-320
d)
-336
10.
Evaluate the arithmetic series described:
11 + 18 + 25 + 32..., S7
11 + 18 + 25 + 32..., S7
a)
225
b)
450
c)
384
d)
224
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