title: Binary digits in decimal
body: <p>How do you represent (decimal) integer 50 in binary?
  How many bits must be "flipped" in order to capitalize a lowercase 'a' that is represented in ASC11? 
  How do you represent the (decimal) integer 50 in, oh, "hexadecimal," otherwise known as base-16? Recall that decimal is simply base-10, and binary is simply base-2. Infer from those base systems how to represent this one?
  Please answer these questions for me.HELP.</p>