Review the following concepts if needed:
Sequence and Series Practice Test
Practice

What term comes next in the sequence?

What is the fourth term of the sequence whose n th term is a _{n}

The terms in the sequence 6, 2, −4, −6, −2, 4, ... can be found using which formula?
(a) a _{n} = a _{n−2} − a _{n −1} , a _{1} = 6 and a _{2} = 2
(b) a _{n} = 6 + ( n − 1)4
(c) a _{n} = a _{n −1} − a _{n −2} , a _{1} = 6 and a _{2} = 2
(d) There is no formula that works.

Is the sequence in Problem 3 arithmetic, geometric, or neither?
(a) Arithmetic
(b) Geometric
(c) Neither
(d) There are not enough terms to tell.

Is the sequence arithmetic, geometric, or neither?
(a) Arithmetic
(b) Geometric
(c) Neither
(d) There are not enough terms to tell.

What is the third term of the arithmetic sequence whose 17th terms is 9 and whose 21st term is 12?

What is the eighth term of the geometric sequence whose third term is and whose sixth term is 10?
(a) 36
(b) 40
(c) 45
(d) 49

Find the sum.
(d) Too many terms are missing to find the sum.

Find the sum.
(d) Too many terms are missing to find the sum.

Find the sum.
(d) There are too many numbers to add.
Solutions
 A
 B
 C
 C
 B
 A
 B
 B
 C
 A
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