I see the numbers 111 or 1111 all the time.  Is there some significance to this?
207680
You see them because you want to see them.  Pick any other number to focus on and you will see those everywhere, too.\n\nThere is no significance.
165318
There are only 17 that are there all the time. On the front there is one in each corner(4), it says "one" at the bottom(5),it says "one" over the green seal(6). On the back it says one in the middle(7), it says "one" at the bottom(8), It says "one" in each corner(12), it has a number one in each corner as well(16), and then it has a I roman numeral at the base of the pyramid(17). The person who told you probally counted the serial numbers and/or the date.
574505
The number is too small for a real "pattern" to emerge.\nThe digits could be the first 10 values of some sequence given by some ( many ) recurrence relation, could be ...\n\nIn order for a proper pattern to emerge, it should be much larger...
526617
The answer is 4.\n11 is eleven, which has 6 letters, so the next number is 6.\n6 is six, which has 3 letters, so the next number is 3.\n3 is three, which has 5 letters, so the next number is 5.\n5 is five, which has 4 letters, so the next number is 4.\n4 is four, which has 4 letters, so the next number is 4. It's all 4's from there!\n\nBy the way, 4 is the only number that has the same number of letters as its value, and if you start this sequence at any whole number, you will end up at four! Just a tidbit I knew! ^_^
250336
292\n490\n274\n472\n454\n436\n418 \n238
234987
As usual the Wikipedia has a whole lot of information on this. There's no point in my repeating all that here - it's not as though I understood any of it. \n\nBe warned, the article has a lot of weird heiroglyphics in it ;-), like this:\nhttp://upload.wikimedia.org/math/f/0/7/f071fb2817d450f44013bcb6373749a1.png
514130
1275 may be the correct answer but not for that reason. i don't agree with the logic in finding the pattern. i have been trying to find the answer for the last 20 mins and will keep trying to find the answer but i want to know two things:\n\ndoes ab represent just the unknown number or is it a two digit number\n\nand are the numbers correct? \n\none more thing, how was this question written i.e. horizontally, vertically?\n\ncheers\n\nthe differences between each number starting from the bottom is \n4, 8, 200, 330 and the differences between those numbers are 4, 192, 132. so i can't get a guesstimate for you other than it should be around 1000 and probably ends in five.
160262
Easy...\n\n312211\n\nLook at it this way...\n\nOne\n1 one\n2 ones\n1 two 1 one\n1 one 1 two 2 ones\n\nTherefor 3 ones 2 twos 1 one
525843
Numbers 1 - 9 are spelled out, once you get to10 and above, you can just use the numerals. Here's a web site to prove my point...\n\nhttp://www.grammarbook.com/numbers/numbers.asp
229426
THe kind with numbers. LOL
664922
This may be what you're looking for:\n\nhttp://answers.yahoo.com/question/index;_ylt=AhIujFEVVDlTF44.of8KbUzsy6IX?qid=1006050603889\n\nIt's they way they see Number 5:11-31.
293289
0123456789\n6210001000\n\nHere you can see there are 6 zeros, 2 ones, 1 two, and 1 six.\n\nI suppose you were looking for something more like this though.\n1234567890\n2100010006\n\nFor those of you with the 1000.0008 solution, where is the 1 8?  I suspect that solution is incorrect.
98933
For your information, the characters used for representing numbers 0 -9 are different in different languages. Try indian languages- Hindi- telugu- any language in india has its own characters. It can be so in many languages. You see English and German using same characters because both use same script. You should probably be asking why all languages have same 10 - base system Thats a good question - and thats because sometime in history people of the world got some sense and decided to use 0 -9 as the basic numbers. Its like seeing people wear pants shirt, belt- using table, chair pen, dining table etc. where ever you go in the world - be it communist China or USA or Cuba or newzealand
213253
While your question does not make sense, lxxi is a roman numeral for "71."\n\nMaybe your site is getting hits because 71 is your lucky number?
314939
It will be \n1, \n3, \n9 and \n27. \n\nAnd you can easily get all the measurement from it. I ve counted all that.
213932
aren't u missing a number there on the last row???\n\nin that case... i would say...\n\n9 11 13 15 17 19....
81826
its a representation of the actual numbers-----