Math Is Fun Forum
  Discussion about math, puzzles, games and fun.   Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ • π ƒ -¹ ² ³ °

You are not logged in.

#1 2006-01-31 12:22:06

ellmp
Member
Registered: 2006-01-31
Posts: 3

What's next

Can you complete this series of numbers?  You'll know when that happens if you solve the problem correctly

1
       
11   
       
21   
       
1112       
   
3112       
   
211213   
       
312213

Offline

#2 2006-01-31 17:09:19

Andrea
Member
Registered: 2006-01-31
Posts: 11

Re: What's next

Uhmm... I think I've heard this one before. I don't remember if this is right, but it has something to do with speaking it out loud.
I'm going to guess..

212223?


Black holes are when God divided by zero.

Offline

#3 2006-01-31 18:30:55

Tigeree
Member
Registered: 2005-11-19
Posts: 13,847

Re: What's next

no.....um.......er............ohhh 412224 it's wrong sad      *crying*


People don't notice whether it's winter or summer when they're happy.
~ Anton Chekhov
Cheer up, emo kid.

Offline

#4 2006-02-02 03:58:35

ellmp
Member
Registered: 2006-01-31
Posts: 3

Re: What's next

Cmon guys I need some help here. What is the pattern?

Offline

#5 2006-02-02 10:05:12

irspow
Member
Registered: 2005-11-24
Posts: 455

Re: What's next

http://www.nerur.com/puzzles/

Whooops!  That site doesn't have the answer either, but they pose the same problem.

Last edited by irspow (2006-02-02 10:06:33)

Offline

#6 2006-02-02 10:06:59

mathsyperson
Moderator
Registered: 2005-06-22
Posts: 4,900

Re: What's next

I agree with Andrea.

The first number in the sequence has one 1. That's 11.
The next has two 1's. That's 21.
Next, we have one 1 and one 2. 1112.
Time time we have three 1's and one 2. 3112.

And so on...


Why did the vector cross the road?
It wanted to be normal.

Offline

#7 2006-02-02 15:38:58

ellmp
Member
Registered: 2006-01-31
Posts: 3

Re: What's next

Thank you guys. It finally makes sense

Offline

#8 2006-02-03 14:53:51

irspow
Member
Registered: 2005-11-24
Posts: 455

Re: What's next

So the series ends with 21322314?  You guys are good!  I would have never have seen that relationship.  A math problem that does not use math...hmm.

Offline

#9 2006-02-03 23:15:08

mathsyperson
Moderator
Registered: 2005-06-22
Posts: 4,900

Re: What's next

That's what I get. From where ellmp left off, you just need 5 more iterations and then it starts repeating itself.


Why did the vector cross the road?
It wanted to be normal.

Offline

#10 2012-05-02 13:28:09

anonimnystefy
Real Member
From: The Foundation
Registered: 2011-05-23
Posts: 15,522

Re: What's next

Here's another one:

2,3,10,12,13,20,21,?


“Here lies the reader who will never open this book. He is forever dead.

“Taking a new step, uttering a new word, is what people fear most.” ― Fyodor Dostoyevsky, Crime and Punishment

Offline

#11 2012-05-02 19:15:07

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 86,309

Re: What's next

Hi;


In mathematics, you don't understand things. You just get used to them.
Of course that result can be rigorously obtained, but who cares?
Combinatorics is Algebra and Algebra is Combinatorics.

Offline

Board footer

Powered by FluxBB