Answer:
1, 4, 7
Explanation:
The instruction in the question can be represented as:
for i in range(1,10,3):
    print i
What the above code does is that:
It starts printing the value of i from 1
Increment by 3
Then stop printing at 9 (i.e.. 10 - 1)
So: The sequence is as follows
Print 1
Add 3, to give 4
Print 4
Add 3, to give 7
Print 7
Add 3, to give 10 (10 > 10 - 1).
So, it stops execution.
 
        
             
        
        
        
Answer: Alignment
Explanation:
The principle of repitition indicates that some aspect of a design are repeated. This can be in form of bullet list, lines, color etc.
Balance has to do with how the weight is distributed. 
The Principle of Alignment means that the pictures on a page should be connected visually to another thing. 
Principle of Proximity simoly means that the items that are related on a page should be close to each other. 
Therefore, the principles of page layout that Sam is planning to use in this artwork is alignment. 
 
        
             
        
        
        
<span>Truth tables are diagrams used in mathematics and logic to help describe the truth of an entire expression based on the truth of its parts.
A truth table shows all the possible combinations (outputs) that can be produced from the given inputs. They are mainly used in Boolean algebra.</span>
        
             
        
        
        
Yes you have to do that so people recognize u but not for all social media unless ur talking bout Facebook, Twitter, kik,and I can't think of anything else. At the moment I know lots more just can't think bout it right now
        
                    
             
        
        
        
Answer; Electric Paper Display
Explanation:
<em>"PDs are extremely thin and only require power when a new image is requested. Instead of a traditional display that uses backlighting to illuminate pixels, an EPD is based on the scientific phenomena known as "electrophoresis," the movement of electrically charged molecules in an electric field."</em>
Above is the definition, as you can see it resembles your question greatly so this is most likely the answer you're looking for. 
Good luck :D