The GRE revised General Test features question types that closely reflect the kind of thinking you'll do in graduate or business school.
- Verbal Reasoning: Measures your ability to analyze and evaluate written material and synthesize information obtained from it, analyze relationships among component parts of sentences and recognize relationships among words and concepts.
- Quantitative Reasoning: Measures problem-solving ability, focusing on basic concepts of arithmetic, algebra, geometry and data analysis.
- Analytical Writing: Measures critical thinking and analytical writing skills, specifically your ability to articulate and support complex ideas clearly and effectively.
Official GRE website: http://www.ets.org/gre
A Persian article about GRE: http://languageties.com/fa/article/gre