# Thread: Help with a sequence

1. ## Help with a sequence

I have a dozen sequences to solve where I am given the first three and have to fill in the following five. In all the cases the sequence repeats so that numbers 5 - 8 are identical with numbers 1 - 4, so that there is really only one to work out - number four. There is just this one that has me stumped:

Its tempting to draw an eighth slice but then the next would surely have to be a one sixteenth slice and so on, and this can't be right since it would not repeat. Number five has to be the same as number one - empty. So what fits in number 4 that logically progresses to give an empty circle again? My intuition says a straight verticle line but I can't see the logic!

Help!

Thanks
Lea

2 me your 4th circle would b a third. R u getting me? Let me no if need explanaiton. I am here for you. Also let me know if you get it right.

Originally Posted by Lea
I have a dozen sequences to solve where I am given the first three and have to fill in the following five. In all the cases the sequence repeats so that numbers 5 - 8 are identical with numbers 1 - 4, so that there is really only one to work out - number four. There is just this one that has me stumped:

Its tempting to draw an eighth slice but then the next would surely have to be a one sixteenth slice and so on, and this can't be right since it would not repeat. Number five has to be the same as number one - empty. So what fits in number 4 that logically progresses to give an empty circle again? My intuition says a straight verticle line but I can't see the logic!

Help!

Thanks
Lea

3. Thanks Eeyore.

So something like this:

Hmmm, not sure I can see it!

It doesn't seem to be anything obvious so I'm starting to think there's something tricky! It'll be a while before I get the answer since its a holiday here.

Thanks again

Lea

Originally Posted by eeyore11
2 me your 4th circle would b a third. R u getting me? Let me no if need explanaiton. I am here for you. Also let me know if you get it right.

4. Originally Posted by Lea
Thanks Eeyore.

So something like this:

Hmmm, not sure I can see it!

It doesn't seem to be anything obvious so I'm starting to think there's something tricky! It'll be a while before I get the answer since its a holiday here.

Thanks again

Lea
i'd probably guess 1/8th for the fourth circle, but then again, as you said, this is a tricky question, i'm not sure what to look out for.

i say 1/8 because the pattern i'm seeing is this:

1--->1/2--->1/4---> 1/8?--->...

= 1/2^0 ---> 1/2^1 ----> 1/2^2 ----> 1/2^3?--->...