Geometric Sequences and Series Test

Unit Test #88

Select your answers to the following 5 questions from the pop-up menus in the right hand column. Clicking the "Begin Test Again" button will clear all the answers.

 

 

Q1:

 

The first term of an geometric sequence is 3 and the common ratio is 2

What is the 9th term?

A. 768

B. 384

C. 1536

D. 54
Answer 1:

 

Q2:

 

What is the common ratio of the geometric sequence?

3, 12, 48, 192, ...

A. 3

B. 4

C. 12

D. 0.25
Answer 2:

 

Q3:

 

The first four terms of a geometric sequence are 2, 6, 18 and 54.

What is the 8th term?

A. 4374

B. 1458

C. 432

D. 1296
Answer 3:

 

Q4:

 For the sequence 100, 50, 25, ...what is the sum of the first 10 terms?

A.199.9

B. 200

C. 180

D. 199.8

 
Answer 4:

Q5:

 

 What is the sum to infinity of sequence above?

A. 0

B. 199

C. 200

D. 199.9
Answer 5: