Is 1.4, 2.8 , 5.6 , 11.2, … an arithmetic sequence?

Question

Is 1.4,  2.8 , 5.6 , 11.2, … an arithmetic sequence?

irishboy123 · Answer

is there a common difference

have you tested by finding the difference between consecutive term?

republican31 · Answer

Sorry for not replying. So common difference meaning through addition and subtraction only? Or is multiplication and division possible for it? I can see it's simply the last term*2. So does that make it an arithmetic sequence? The lesson was a bit foggy on this.

republican31 · Answer

@IrishBoy123 ?

republican31 · Answer

So I guess it's only an arithmetic sequence if the difference is through addition or subtraction, and it is only a pattern or sequence if it's through multiplication or division.

irishboy123 · Answer

yes 

arithmetic => common difference
geometric => common ratio