What is the pattern in this sequence?

[ak47num1]

I am just wondering what is the pattern in the following sequence. Thanks.

0.5, 1, 2, 4, 16, ...

[lip1978]

It's a typo and there's an 8 between 4 and 16

[Gordon]

sub it into the formula...

It's a typo and there's an 8 between 4 and 16

yeah.

The geometric diffrence is 2.

Tn = AR^(n-1)

Sn=A(r^n-1)/(r-1)

[ak47num1]

Sorry, but sub it into what formula?

I am also thinking it is a typo.

[Gordon]

up top.

A= .5
r = 2

[Mems]

Sub it into the Tn formula. Are you taking this in Grade 11 Math perchance?

-Mems

[blexann]

I am just wondering what is the pattern in the following sequence. Thanks.

0.5, 1, 2, 4, 16, ...

just wondering ?

[Gordon]

just wondering ?

There is none,
When, the pattern changes after the 4. There should be a 8 in between the 4 and 16 or else it is not a geometric sequence.

[ak47num1]

LOL. Alright, I would like to know... not just wondering...
I should be more concise with my wordings.

Subbing into the Tn formula did not work for me.

[ak47num1]

Yes. It seems that there is no pattern in this sequence.

[ZenOps]

Blue, no no, wait, yellow, ARghhhhh!

[Gordon]

If it was a word problem they did not give you enough information, your missing n.
So you cant solve it as a geometric formula.

If they give you the last term or the amount of terms then you would be able to use the formula. If not then forget it. Cause theres obvesouly a mistake from 4 to 16.
Should be a 8 in between. So theres no pattern in this question.

[P__S__2]

Multiply by 2? lol

[Gordon]

Multiply by 2? lol

Yeah I said that already, but then the pattern isnt right there cause its missing a 8 inbetween 4 and 16.

[sxz]

Sub it into the Tn formula. Are you taking this in Grade 11 Math perchance?

-Mems

I think most (if not all) high schools have finished for the summer now.