Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Graphic illustration of a trial with a memory set of size 3. The differences in the positions of the characters on-screen have been exaggerated for clarity; in actuality the final string would appear in the middle of the screen instead of the right side.
