9,73,241,561,1081,1849,_?_ • Hacker News Board

Re: 9,73,241,561,1081,1849,_?_

#11

Post by amichail » Thu, Nov 05, 2009, 5:37 PM UTC

This question is not well-defined. Any number can be a solution.

Re: 9,73,241,561,1081,1849,_?_

#12

Post by megamark16 » Thu, Nov 05, 2009, 5:38 PM UTC

fsniper wrote: post #4

I hit my head to wall after reading this. Difference table is a really cool way to solve this kind of questions. I thought "how come I have never learned this difference table before". I could make better points with IQ tests with difference tables :)

I've never been particularly good (or confident?) at math, but this actually piqued my interest, it's a very cool trick/technique. Maybe I should enroll in a math class at the local community college just to try to improve myself a little bit. Besides, I have so many more ways to actually apply what I'd be learning now then I did when I took my last math class (which I think was back when I was 16 or 17).

Re: 9,73,241,561,1081,1849,_?_

#13

Post by graywh » Thu, Nov 05, 2009, 5:42 PM UTC

Was surprised to see this happen:

http://www.wolframalpha.com/input/?i=0%2C1%2C2%2C4%2C8%2C16%...

Re: 9,73,241,561,1081,1849,_?_

#14

Post by bdr » Thu, Nov 05, 2009, 5:45 PM UTC

amichail wrote: post #11

This question is not well-defined. Any number can be a solution.

Here's one interpretation: What will the simplest program that outputs these numbers output next?

Re: 9,73,241,561,1081,1849,_?_

#15

Post by amichail » Thu, Nov 05, 2009, 5:47 PM UTC

bdr wrote: post #14

amichail wrote: post #11

This question is not well-defined. Any number can be a solution.

Here's one interpretation: What will the simplest program that outputs these numbers output next?

How will you prove that your answer is correct?

Re: 9,73,241,561,1081,1849,_?_

#16

Post by atamyrat » Thu, Nov 05, 2009, 5:50 PM UTC

graywh wrote: post #13

Was surprised to see this happen: http://www.wolframalpha.com/input/?i=0%2C1%2C2%2C4%2C8%2C16%...

Why start with 0?

1,2,4,8 works fine. http://www.wolframalpha.com/input/?i=1%2C2%2C4%2C8%2C16%2C32...

Re: 9,73,241,561,1081,1849,_?_

#17

Post by lucifer » Thu, Nov 05, 2009, 5:51 PM UTC

graywh wrote: post #13

Was surprised to see this happen: http://www.wolframalpha.com/input/?i=0%2C1%2C2%2C4%2C8%2C16%...

0, ...

Re: 9,73,241,561,1081,1849,_?_

#18

Post by nixme » Thu, Nov 05, 2009, 5:51 PM UTC

graywh wrote: post #13

Was surprised to see this happen: http://www.wolframalpha.com/input/?i=0%2C1%2C2%2C4%2C8%2C16%...

Works properly if you take out the 0 term: http://www.wolframalpha.com/input/?i=1,2,4,8,16,32,64,128,25...

Re: 9,73,241,561,1081,1849,_?_

#19

Post by Leon » Thu, Nov 05, 2009, 6:01 PM UTC

amichail wrote: post #15

bdr wrote: post #14

Earlier quoted context omitted.

Here's one interpretation: What will the simplest program that outputs these numbers output next?

How will you prove that your answer is correct?

occam's razor

Re: 9,73,241,561,1081,1849,_?_

#20

Post by seven » Thu, Nov 05, 2009, 6:05 PM UTC

nixme wrote: post #18

graywh wrote: post #13

Was surprised to see this happen: http://www.wolframalpha.com/input/?i=0%2C1%2C2%2C4%2C8%2C16%...

Works properly if you take out the 0 term: http://www.wolframalpha.com/input/?i=1,2,4,8,16,32,64,128,25...

This works with 0: http://www.wolframalpha.com/input/?i=0,1,2,4,8,16,32,64,128,...