Answer:
1
5
9
Step-by-step explanation:
Answer:
99/100
Step-by-step explanation:
First of all recall that

Now we we will try to apply that formula for
and
.
First rewrite 
Now

The answer is definitely c
Answer:
4
Step-by-step explanation:
We need to find the factors of each number
28 -
1x28
2x14
4x7
60 -
1x60
2x30
3x20
4x15
5x12
6x10
then we need to find the largest number they have in common
in this case it is 4