Are theese constant Ratios...

Question

1:2:4:8:16,

or are theese constant ratios:

1:2 2:4 4:8 8:16

Are they both wrong?

If they are, could you give me 2 examples and explain them please?
With 2, I should probably be able to come up with my own.:)

Answer 1

PLEEEEEEEEEEEEEEEEEEEEEEEAES HELP ME!!!!!!!!!!!!!!!! THIS IS DRIVING ME CRAAAAAAAAAAAAAAZZZZZZYY

Answer 2

1:2 is a 1/2 ratio
2:4 is a 1/2 ratio
4:8 is a 1/2 ratio
so the second one has a constant ratio

Answer 3

OK. I understand they are all half ratios. I do. But what is a constant ratio??? I mean I know how to write them -now-, I just don't understand them.
|:(

Answer 4

SEIRIOUSLY, CAN ANY BODY HELP ME WITH THIS???

PLEASE