A is open question
B is closed question
C is Closed question
D is open question
E is open question
We are adding 7 each time.
The formula for an arithmetic sequence is
first term+(n-1)d
Where n is the number of terms, and d is the common difference
In this case, n is 35 and d is 7
Plug the numbers into the formula and you get
-33+(35-1)7
Solve
-33+(238)= 205
If you are referring to the common factors:
Factorize both numbers:
48 = 2*2*2*2*3
120 = 2*2*2*3*5
Common factors: 1, 2, 3, 4, 6, 8, 12, 24
If you are referring to factors in general:
48: 1, 2, 3, 4, 6, 8, 12, 16, 24, 48
120: 1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120