For GMAT/GRE:
* Official GMAT/GRE websites: The official sources are the best place to start. They often have sample questions and possibly full-length practice tests (though often for a fee).
* Kaplan: Offers numerous practice tests and resources, often as part of a paid course but sometimes with free samples.
* Manhattan Prep: Similar to Kaplan, offering comprehensive prep materials including mock tests.
* Magoosh: Provides online GMAT and GRE prep courses with practice tests included.
* Khan Academy: Offers free practice materials for the GMAT and GRE, including some practice questions and potentially short practice tests. It may not have full-length simulations though.
For Specific MBA Programs:
Some business schools provide their own sample questions or practice tests on their admissions websites. Check the admissions section of the specific schools you are interested in.
Other Websites (Use with Caution):
Many other websites offer MBA mock tests, but the quality can vary significantly. Be cautious and check reviews before using any unknown source. Look for sites that:
* Are reputable: Check for reviews and testimonials.
* Provide detailed explanations: Learning from your mistakes is crucial; good tests provide detailed explanations of answers.
* Offer a variety of question types: A good test should cover all aspects of the exam.
In short: Start with the official GMAT/GRE websites and then explore reputable prep companies like Kaplan, Manhattan Prep, and Magoosh. Supplement with free resources like Khan Academy. Remember to check individual business school websites for their own materials. Don't rely solely on free, unverified websites, as the quality and accuracy may be questionable.