Very good, irspow. Feel free to join up as a member any time you want, as it will let you upload images, use a signature and avatar, stop other people from stealing your name and post in all the boards, including the *secret* one that you can't even see. I hung around as a guest for a while, but being a member is much more fun. [Edit: People from everywhere will flock to admire my skills of persuasion. Well, maybe they won't. But they should. ]

Back to morik, in question 3, hexadecimal notation is just base 16. The numbers count 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, E, F, 10 and so on.

For the actual calculation, it is simpler to leave it in base 10. 250/10 is obviously 25.

To convert 25 into base 16, just split it into powers of 16. 25 has one 16 in it, so the 16^1 digit is 1. Left over is 9, so the units digit is 9. Therefore, 25(dec) = 19(hex)

Fun Fact: 31(oct) = 25(dec)

Hallowe'en = Christmas!