

1. 
Determine the next three terms of the sequence 8, 13, 23, 38, 58, … . 


A. 
83, 113, 148 
B. 
88, 133, 138 


C. 
78, 108, 133 
D. 
73, 93, 108 


Hint 


2. 
What is used to show that an assumption is false? 


A. 
counterexample 
B. 
conjecture 


C. 
pattern 
D. 
inductive reasoning 


Hint 


3. 
What is the next series of triangles in the sequence below? 





A. 



B. 



C. 



D. 



Hint 


4. 
Find the next three terms of the sequence. 2, 5, 4, 7, 6,….. 


A. 
10, 13,12 
B. 
8, 10, 12 


C. 
9, 8, 11 
D. 
9, 12, 15 


Hint 


5. 
One possible counterexample for the statement ''All fruits taste sweet'' is ________. 


A. 
Watermelons 
B. 
Oranges 


C. 
Lemons 
D. 
Plums 


Hint 


