To learn about binary, please study this tutorial I found online. http://www.lyzrdstomp.com/binary/binprime.html

Next I want you to study this tutorial on hexadecimal. http://www.lyzrdstomp.com/binary/hex1.html

That author also provides a nice conversion table for decimal, hex, and binary. http://www.lyzrdstomp.com/binary/hex2.html

To solidify this learning you need to practice conversions. Without using the table convert each of the following hexadecimal numbers into decimal.

• 34
• 2e
• 9f

Without using the table convert each of the following decimal numbers into hexadecimal.

• 110
• 44
• 83
• 90

From what you have learned, can you now understand what octal (base 8) numbers would look like? Convert the following octal numbers into decimal.

• 56
• 37
• 22

You are now in a position to understand the following joke.

• Why did the nerd not know the difference between Christmas and Halloween?
• Because Dec 25 == Oct 31