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I used several implementations in different languages to calculate and compare. The good thing: I get consistent results with small error rates. (Java same result as Python) The bad thing: The last three digits are varying. At some point (~85000000 iterations) the value of the answer does not change...

Hi there! I think this is a typical hacker.org challenge. So I have to find the source where the image was generated. Pretty obvious, if you know other map services than google maps... :-p I did a rough cross-check and recognized, that the source has changed. (Very bad, if you want to find differenc...

Hi there!

I looked closer at the number and got ... lets say 14 numbers.
It is obvious that there is a certain order of these numbers...

I ran a lot of tests, but nothing gave me a clue. Maybe someone could give me a little hint.

I added the 1 already to my solution. Didn't forget that.

Maybe there is an inaccuracy in the representation.

There two possibilities to display the number:

a) x.xxxxxxxxxxxe+xx
b) xxxxxxxxxxxxx.xxx

I figured out, what python means with "and" and "or". I took the two recursive functions and transformed them into non-recursive functions. I found an expression, that represents the (N(b*4)*b)/D(b*4) as a sum. I found an expression, that represents the sum DIRECT. So I just have...

I looked at these 5 numbers and they start all with 00. If you make an international phone call from Germany to any other country, you would dial 00 and then the country code. (Dunno if that works for other countries.) I looked the countries up, but for the third I can't find a country. So I think I...