WorksheetsQuiz - Lessons 22-24 - Sequences and Summations
Total questions: 13
Worksheet time: 56mins
Find the common difference of the arithmetic sequence
3,−2,−7,...
3
-2
-5
5
Find the common ratio of the geometric sequence 6, 42, 294,...
6
7
8
49
Find the common ratio of the geometric sequence 11, -55, 275,...
-5
5
25
-25
Write an explicit formula for an, the nth term of the sequence 9, 13, 17, ...
an = 9 + 4(n-1)
an = 9 - 4(n-1)
an = 9 + 4(n)
an = 9 * 4n-1
Write an explicit formula for an, the nth term of the sequence 63, -21, 7, ...
an = 63 - 84(n-1)
an = 63 * (1/3)n-1
an = 63 * (-1/3)n-1
an = 63 * (-3)n-1
Find the 93rd term of the arithmetic sequence -5, -15, -25, ...
-920
-925
-930
-935
Find the 9th term of the geometric sequence 3, -15, 75, ...
1,171,875
-1,171,875
5,859,375
-5,859,375
If a1=7 and an=an-1+1 then find the value of a4.
28
4
10
11
If a1=2 and an= -2an-1 then find the value of a6.
-64
64
32
128
Which recursive sequence would produce the sequence
7, 25, 97,...?
a1 = 7 and an = 4an-1 + 3
a1 = 7 and an = 3n-1 + 4
a1 = 7 and an = 4an-1 - 3
a1 = 7 and an = -3an-1 + 4
-24
-59
-108
-190
How is the series 5+11+17+ ⋯ +161 represented in summation notation?
The Sigma Notation above represents the summation of this series: 4+10+16+22+28
What are the values of a and b in the Sigma Notation?
a = 5, b = 1
a = 5, b = 0
a = 6, b = 1
a = 1, b = 5
