Unit Test #17

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 an arithmetic series?

3 + 8 + 13 + 18 + 23

A. Yes
B. No

Answer 1:

 

 

Q2:

 

What is the sum of the first 100 terms of the arithmetic sequence
3, 10, 17, 24, ...?
A. 300
B. 696
C. 34800
D. 34950

Answer 2:

 

 

Q3:

 

The first four terms of an arithmetic sequence are 8, 14, 20 and 26. What is the sum of the first 12th terms?

A. 984
B. 316
C. 492
D. 74

Answer 3:

 

 

Q4:

 

The first term of an arithmetic sequence is 3 and the sum of the first 10 terms is 105.

What is the common difference of the sequence?

A. 2
B. 5 / 2
C. 5 / 3
D. 3

Answer 4:

 

 

Q5:

 

.

How many matches would there be altogether in the first 20 patterns?

A. 61
B. 650
C. 680
D. 646

Answer 5:

 

 

Q6:

 

How many matches would there be, in total, in the first 100 patterns in the sequence shown above? A. 3250
B. 15250
C. 30500
D. 6500

Answer 6:

 

 

Q7:

 

How many terms are there in the series

100 + 95 + 90 + ... + 5 + 0?

A.100 
B. 50
C. 20
D. 21

Answer 7:

 

 

Q8:

 

What is the sum of the series 100 + 95 + 90 + ... + 5 + 0 ? A. 1050
B. 2010
C. 1000
D. 950

Answer 8:

 

 

Q9:

 

For the arithmetic sequence 0.5, -0.5, -1.5, -2.5, ...what is the sum of the first 30 terms?

A. -840
B. -427.5
C. -419
D. -420

Answer 9:

 

 

Q10:

 

What is the sum of the first 100 natural numbers? A. 10 000
B. 5 100
C. 5 050
D. 4 950

Answer 10: