GCF for the following plz!?

Question

24 and 40
18 and 30
12 and 48
36 and 90
50 and 20
15 and 17
52 and 16
63 and 42
24 and 40
36 and 12 and 72
28 and 49 and 105
30 and 45 and 75
Please and Thank you! :)

Answer 1

I will answer the first and last

The first is 8
The last is 15

Now you try the rest

Answer 2

The technique is to find the largest number (or factor) which divides evenly into the smallest number, then see if it also divides evenly into the largest number. If not, try the next largest factor until you find the answer or discover that there is none.

How you do it is to start dividing by the *smallest* numbers, which will give you the largest factors. Try this with 12 and 48 and you discover that the GCF is 12.

For 50 and 20, diving by 1 does not produce a common factor, but the next number, 2, does (remember to divide the smallest number first).

If 2 doesn't work, try 3, and so on. Sometimes nothing works and the GCF is 1, as in 15 and 17.

Answer 3

Ill do the first one.
Factoring 24, you have 2^3*3.
Factoring 40, you have 2^3*5.
So, the factor they have in common is 2^3=8, right.
So, the GCF is 8.

If for instance, one numbers has a factor a^n, and another has a factor a^x, then if x

Answer 4

8
6
12
18
10
1
4
21
12
7
15

there ya go