Dentist. Dentists in the U.S. have four years of post-graduate professional education as well as a residency.

CUSIP. "CUSIP" represents the Committee on Uniform Security Identification Procedures.

Ronald Reagan. President Reagan visited the stock exchange on March 28, 1985.

Psychologist. A psychologist is a scientist trained in psychology.

Probability. The Toronto Stock Exchange is the largest stock market in Canada.

Hedge Funds. George Soros ranked 29th on "Forbes" 2006 Rich List was 76 years old in 2006 and was worth $8.5 billion.