Geometric Sequence and Series

What is the next term in the geometric sequence 3, 6, 12, …?

• 15

• 20

• 24

• 35

What is the common ratio in the geometric sequence 6, 18, 54, 162 ?

• 3

• 5

• 7

• 9

Which set of numbers below is an example of geometric sequence?

• 1, 3, 5, 7, 9

• 2, 4, 6, 8, 10

• 5, 10, 15, 20

• 10, 20, 40, 80

Which of the following does NOT belong to the group?

• 0, 3, 6, 9

• 1, 2, 4, 8

• -24, -12, -6, -3

• 4, -16, 64, -256

What is the common ratio of the geometric sequence 8, -4, 2, -1, …?

• -2

• -1/2

• 1/2

• 2

What are the next two terms in the sequence 3, 6, 12, 24, __, __?

• 28 and 30

• 48 and 96

• 50 and 100

• 65 and 102

Which of the following is the missing first term of the geometric sequence ___, 2, -4, 8, -16, …?

• -2

• -1

• 1

• 2

Which of the following geometric sequences below has a common ratio of ½ ?

• 1/3, 2/3, 4/3

• 4, 8, 16, 32

• 30, 15, 7.5 3.75

• 100, 10, 1, 0.1

What is the next term in the geometric sequence 4, -12, 36 ?

• -42

• -54

• -72

• -108

Find the common ratio of the geometric sequence 8, 2, ½, 1/8, 1/32, …?

• 1/4

• 1/16

• 1/64

• 1/128