I suck at math :( Please help!?

Question

What is the greatest common factor and the least common factor of:

27,36

42,55

64,48

12,30

where could i learn how to do this myself at too?

Answer 1

I see someone else already told you some wrong answers, but here is how to factor a number:

To help my students remember, I tell them...

You go to a FACTORy to build something. A FACTOR is a number that can be used to build another number.

For example, if I want to build the number 12:

I can build it with 1's

1+1+1+1+1+1+1+1+1+1+1+1 (1 X 12)

I can build it with 2's:

2+2+2+2+2+2 (2 X 6)

I can build it with 3's:

3+3+3+3 (3 X 4)

(Now, going backwards)

I can build it with 4's:

4+4+4 (4 X 3)

I can build it with 6's:

6 + 6 (6 X 2)

I can build it with 12's:

12 (12 X 1)

So, the factors of 12 are:

1, 2, 3, 4, 6, 12

If you factored 27 you would get 1, 3, 9, 27

For 36, you'd get                       1, 2, 3, 4, 9, 12, 18, 36

The least common factor is 3 (never say 1) and the greatest common factor is 9.

Answer 2

for your last question...with your attitude you probably cannot, sorry  :(

And did you want  the greatest common factor and the least common multiple?...GCF { 9, none [1 is not generally considered a factor in problems like these] , 16 , 6}

and LCF { 3, none, 2, 2}