As for Einstein's puzzle (some people claim it is of Lewis Caroll's authorship):
it is the German who has fish.

As for the shani's puzzle - I suppose the other child was born on 29th February. However, there is still not enough information to guess the proper age - at least not without a quick glance at that kid

A good lead here would be if it is just some kid or a teenager. If it is the teenager, then there are only two possibilities: 13 and 17. But at this point it is still the dead end.

@insomniac:
The order in which you multiply three numbers doesn't matter. Never ever. 4x3x3 = 3x3x4 = 3x4x3 = 36

Well, I will tell you one more time: it is pure logic, pure mathematics. No hidden catch in the puzzle.

And since 404 has given the right answer then I suppose there is at least two of us who know the solution

@shani:
There is only one correct answer to that problem

Then I have got one more - find explanation for that one :

Two friends are meeting after a long time. During the talk one of them asks:
- Do you have any children?
- Yes, I have got three - the other answers.
- How old are they?
- The product of their ages is 36.
- Then I don't know...
- The sum of their ages is equal to the number of trees outside.
- I still do not know.
- The oldest has blue eyes.
- Oh! Now I know!!

Now you tell me - how old are they?

P.S. It is pretty easy puzzle, although at the beginning it may seem ludicrous.

Sorry, I've been out. Not bluffing ;p

Here the spoiler begins. If you want to guess yourselves, do not read further.

So, what we THINK we can see, are two large triangles. But IN REALITY none of them is the real triangle. The hypotenuse side of the upper one is concave, whereas the second one has the hypotenuse side convex. So these aren't really straight lines but curves. The tiny space between these curves is where you loose the additional square.

You can check it by comparing the angles in small triangles (the red and the green). If you e.g. calculate some trygonometric function of one of the angles (of course not the right one), you will see that these triangles are not congruent and therefore cannot form the large triangle as it is shown in the picture.

Hope, it wasn't too complicated (I still got some problems with expressing mathematical ideas in English ;p).

And btw, it's 'he'

You know, there's no true satisfaction if somebody else tells you the solution :P So I am not going to spoil you all the fun :) Unless you really want me to...

Enjoying. Especially it may be the last chance for the next few years...

On the contrary - I often have those "3pm moments", where I am not really working but not really shirking work as well. But yeah, everything seems unreal then.

And yeah for the second time - I am also suffering from the life anxiety. But suppose it's not about being insane. It's about being human, isn't it?

Regina Spektor - Begin to hope. Btw, what a great voice she has...

Aniela?

Chael?

Evangelina?

Tanji?

I would definitely be a rich-married traveler

Try doing some sport outdoors (regularly) as a break. It really helps.

"Good times are killing me"

They really do.

Oh, yes, I would have forgotten: welcome everybody. I haven't changed my name since my birth. I simply sneaked to that forum in such a manner that nobody noticed :P

And yes, good printer is crucial. That's cause the salesman in my grocery has an eagle eye and he would immediately recognised carelessly forged money.

Seriously - only easy and legal way of earning some money I can think of is ebay. Hah, but nobody told that it should be easy...