GMAT:
The GMAT (Graduate Management Admission Test) is a 3½-hour standardized exam designed to predict how test takers will perform academically in MBA (Masters in Business Administration) programs. GMAT scores are used by graduate business schools to make admission decisions. The GMAT exam consists of four sections: an analytical writing assessment, an integrated reasoning section, a quantitative section, and a verbal section. Total testing time is three and a half hours, but test takers should plan for a total time of approximately four hours, with breaks. The overall marks are 800 points.
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http://www.mba.com/us