is the art to write in or decipher secret code. Encryption Cryptography Keying Decryption

There is a simple pattern for determining if a binary number is odd. what is it and why does this pattern occur? how many bits would you need if you wanted to have the ability to count up to 1000? how high could you count in binary if you used all 10 of your fingers as bits? (finger up means 1, finger down means 0)

What is the original authority for copyright laws

To maintain clarity and focus lighting might be needed