What am I doing wrong

Select all that apply. what types of documents can be created using word-processing software? business newsletters letters of application presentation slideshows customer databases

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)

The most complicated four letter word