# GMAT Data Sufficiency Practice Questions

Question Difficulty: Hard | Intermediate | Easy

### Hard Practice Questions

The most important part of GMAT prep is working practice problems. We hope you benefited from these 50 free practice GMAT data sufficiency questions with thorough answers. Based upon internal testing and sophisticated algorithms, we believe our proprietary custom-written questions provide an excellent means to practice the mathematics concepts you will likely be tested on. Please feel free to download and distribute the accompanying PDF, which contains data sufficiency questions.