What's this mean? it's supposed to be a password

[anechka1986]

u'{0, 1, ..., 9}

[agnes61]

4. squares of 1, 2, and 3

[factor-fiction]

They are indeed square numbers- but it could also be the set of all digits (0-9) or indeed many other things (depending on what the .... represents).

We need the rest of the clue too- this shows a matrix. Here it is:
http://www.frozenagain.com/password/4chan.html

The fact that it's a password is a bit of a red-herring- it's just a clue to a word /phrase that anechka needs.

[dundurn]

I don't know why (no mathematician) but the answer is 5 - you have to input as five

[anechka1986]

thanks everyone! no im stuck on the next one lol

[dundurn]

OK for the next one, concentrate on the mis-spellings

and for the one after that on the mis-print

after that it says you're finished, but I'm not so sure|!