There are six people which means that each person can be arranged in 6 various arrangements
6×6=36
Answer: There can be 36 different ways for 6 people to be arranged 
        
             
        
        
        
Answer:
Step-by-step explanation:
Divide: 3/13 = 3 ÷ 13
3/13 = 0.230769230769...
B) is your answer
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It's really important that you aim to understand how to do these problems yourself, rather than "pay" others to do them for you.  Why not ask for "directions" or "guidance," instead of for "answers?"
This is a tricky question because it's not required that you have the full 12 beads on the string in every case.  You could, for example, have 6 beads, 2 of which would be red, making the ratio of red beads 2 to 6, or 1 to 3.  
What about 3 red beads in 9?
What about 1 red bead in 3?
Do these "answers" satisfy the requirement that the ratio of red beads to all beads is 1:3?
        
             
        
        
        
<span>cross is my best answer</span>