Lesson 2.1 and 2.2

Select the next letter.

A, D, G, J, M

• P

• Q

• R

• S

The type of reasoning where a person makes  conclusions based on observations and patterns is called...

• Inductive reasoning
• Deductive reasoning
• Conjecture
• Experiments

Used to prove that a conjecture is false.

• Counterexample
• Inductive Reasoning
• Concluding statement
• Conjecture

Which is a counterexample to the following statement?

If an angle is obtuse, then it is $125\degree$ .

•  $90\degree$  

•  $57\degree$  

•  $160\degree$  

•  $180\degree$  

37, 34, 31, 28
Which number should come next in the pattern?

• 24
• 23
• 25
• 27

What number best completes the analogy:

8:4 as 10:

• 3
• 7
• 24
• 5

What are the missing numbers in this pattern?
23, 33, ___, 53, ___, 73

• 32, 62
• 42, 63
• 43, 63
• 42, 62

What are the missing numbers in this pattern?
12, 15, ___, 21, ____, 27

• 18,23
• 18, 24
• 17, 25
• 17, 24

How would you describe this pattern's rule?
65, 62, 59, 56, 53, 50

• Subtract 2
• Subtract 3
• Subtract 4
• Add 3

What is the rule for this pattern?
32,36,40,44

• add 4
• multiply 2
• subtract 4
• divide by 2