Answer:
4th box 
Step-by-step explanation:
 
        
             
        
        
        
Answer:
(a) 720 ways
(b) 120 ways
(c) 24 ways
Step-by-step explanation:
Given

 --- number of letters
Solving (a): Number of arrangements.
We have:

So, the number of arrangements is calculated as:

This gives:

This gives:


Solving (b): DA as a unit
DA as a unit implies that, we have:
[DA] N C E R
So, we have:

So, the number of arrangements is calculated as:

This gives:

This gives:


Solving (c): NCE as a unit
NCE as a unit implies that, we have:
D A [NCE] R
So, we have:

So, the number of arrangements is calculated as:

This gives:

This gives:


 
        
             
        
        
        
Answer: B) one
This one point is point U since it is on line segment CD. In contrast, a point like point E is not on line CD, so E is not collinear with C and D.
 
        
             
        
        
        
Answer:
0
Step-by-step explanation:

Changing x to y and y to x:

I hope I helped you.
 
        
             
        
        
        
The answer is 5/4 in fraction form
1.25 in decimal form