Answer:
yes
Step-by-step explanation:
 
        
             
        
        
        
Answer: No!
Step-by-step explanation:
2 is a prime number
7 is a prime number
They both are prime numbers so they cant be simplified further. They both are already simplified to the lowest terms.
 Hope this helps :)
 
        
                    
             
        
        
        
Answer:
4565
Step-by-step explanation:
 
        
             
        
        
        
Answer:
Step-by-step explanation:
Total number of antenna is 15
Defective antenna is 3
The functional antenna is 15-3=12.
Now, if no two defectives are to be consecutive, then the spaces between the functional antennas must each contain at most one defective antenna.
So,
We line up the 13 good ones, and see where the bad one will fits in 
__G __ G __ G __ G __ G __G __ G __ G __ G __ G __ G __ G __G __ 
Each of the places where there's a line is an available spot for one (and no more than one!) bad antenna.
Then,
There are 14 spot available for the defective and there are 3 defective, so the arrange will be combinational arrangement 
ⁿCr= n!/(n-r)!r!
The number of arrangement is 
14C3=14!/(14-3)!3!
14C3=14×13×12×11!/11!×3×2
14C3=14×13×12/6
14C3=364ways