Arithmetic and Geometric Sequences Quiz

What is the next term in the sequence 71, 63, 55, 47, 39?

• 30

• 31

• 32

• 33

What is the common difference in the arithmetic sequence 13, 26, 39, 52, 65?

• 10

• 11

• 12

• 13

What is the 13th term of the arithmetic sequence -8, -2, 4, 10, 16, . . . ?

• 52

• 58

• 64

• 70

Find the next four terms of an arithmetic sequence 65, 59, 53, ...

• 47, 41, 35, 29

• 47, 42, 36, 30

• 48, 41, 35, 29

• 48, 42, 36, 30

In an arithmetic sequence 89, 77, 65, 53, 41, what is the common difference?

• -8

• -10

• -12

• -14

What is the next five terms of an arithmetic sequence if the first term is 98 and the common difference is -13?

• 85, 72, 59, 46, 33

• 86, 73, 60, 47, 34

• 110, 122, 133, 143, 156

• 111, 124, 137, 150, 163

If a_n = 4n – 3, what is a_20?

• 70

• 73

• 77

• 80

Write the first four terms of the sequence in which a_n = 9 + (n-1)4.

• 9, 13, 17, 21

• 9, 14, 17, 21

• 9, 15, 18, 21

• 9, 15, 17, 21

If a_1 = 21, d = 7 and a_n = 189, what is the value of n?

• 30

• 25

• 20

• 15

Which of the following is an arithmetic sequence?

• 1, 1, 2, 3, 5, . . .

• 3, 9, 27, 81, 243, . . .

• 5, 10, 16, 23, 31, . . .

• 9, 17, 25, 33, 41, . . .