Unit Test #15

Select your answers to the following 10 questions from the pop-up menus in the right hand column. Clicking the "Begin Test Again" button will clear all the answers.

 

 

Q1:

 

Is the following sequence a geometric sequence?

2, 5, 12.5, 25, ...

A. Yes
B. No

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:

 

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

What is the 9th term?

A. 768 
B. 384
C. 1536
D. 54

Answer 4:

 

 

Q5:

 

How many matches would there be in the 7th pattern.

A. 128
B. 256
C. 512
D. 112

Answer 5:

 

 

Q6:

 

How many matches would there be in the 20th pattern in the sequence shown above? A. 2097152
B. 320
C. 4194304
D. 8388608

Answer 6:

 

 

Q7:

 

For the sequence 100, 50, 25, ... how many terms does it take to get below 1?

A. 6 terms
B. 7 terms
C. 8 terms
D. 9 terms

 

Answer 7:

 

 

Q8:

 

For the sequence 4, 8, 16, 32, 64, 128, ...

if t n = 32, which term is t n - 1?

A. 8
B. 16
C. 32
D. 64

Answer 8:

 

 

Q9:

 

For the arithmetic sequence 0.5, -0.5, 0.5, -0.5, ...

What is the common ratio?

A. -0.5
B. -2
C. -1
D. 1

Answer 9:

 

 

Q10:

 

What is the 10th term of the sequence above? A. 1
B. -1
C. 0.5
D. -0.5

Answer 10: