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Geometric Sequence

Total questions: 10

Worksheet time: 15mins

Name
Class
Date
1.

Find the common ratio of the geometric sequence 2, 10, 50,...

a)

2

b)

10

c)

5

d)

1/5

2.

Which of the following is a geometric sequence?

a)

1, 11, 21, 31

b)

1, 2, 4, 16, 32

c)

1, -2, 4, -8, 16

d)

1, 2, 3, 4, 5, 6

3.

What is the value of the fifth term of the geometric sequence 2, 6, 18,....?

a)

161

b)

162

c)

163

d)

164

4.

The fifth term of a geometric sequence is 2 and the second term is 54. What is the common ratio of the sequence?

a)

3

b)

5/3

c)

2/3

d)

1/3

5.

State whether each of the following sequences is geometric or not.

a)

5, 20, 80, 320

b)

7√2, 5√2, 3√2, √2

c)

5, -10, 20, -40

d)

10/3, 10/6, 10/9, 10/15

6.

In geometric sequence each item is found by (a)   the previous term by a constant.

7.

A (a)   can also have a smaller and smaller values.

8.

Find the missing term in ___, ___, 32, 64, 128,....

(a)  

9.

It is an ordered set of numbers that progresses by multiplying or dividing each term by a common ratio. What am I?

(a)  

10.

What is missing in the geometric sequence formula? αn = α1 (r)

(a)