The GRE General Test has three main divisions: Analytical Writing; Verbal Reasoning; Quantitative Reasoning. A typical computer-based test starts with the Analytical Writing section (1 hour). There are 2 sections of Verbal Reasoning each with approximately 20 questions to be completed in 30 minutes. There are 2 sections of Quantitative Reasoning each with approximately 20 questions to be completed in 35 minutes. There is usually also an unidentified unscored section that can appear at any position in the test.

The computer-based GRE takes 3 hours 45 minutes.

Applying for GRE: http://www.gre.org/ttindex.html