Answer:
a) The elements are 
b) The elements are (-∞ ...-1,0,1,2,..∞).
c) The elements are 2 and 3.
Step-by-step explanation:
To find : List all element of the following sets ?
Solution :
a) 
Here, The function is 
Where, 
Substituting the values to get elements,




The elements are 
b) 
Here, The function is 
Where,
i.e. integers (..,-2,-1,0,1,2,..)
For x=-2

For x=-1

For x=0

For x=1

For x=2

The elements are (-∞ ...-1,0,1,2,..∞).
c) 
Here, The function is n is a factor of 24.
Where, n is a prime number
Factors of 24 are 1,2,3,4,6,8,12,24.
The prime factor are 2,3.
The elements are 2 and 3.