**Additional Practice**

Each of the above video lessons features a Reinforcement Activities box containing practice questions that are **specifically related** to the particular concepts covered in that lesson (e.g., the lesson on The Complement). On the other hand, the links below will take you to practice questions that test a wide variety of questions under the **general topic** of Probability. Given this, you may find it beneficial to work on the questions below AFTER you’ve mastered the content in the Probability module above.

- Official GMAT questions about Probability- Problem Solving

- Official GMAT questions about Probability - Data Sufficiency

**Practice from the Official Guide**

**Official Guide for GMAT Review (2019 edition)**

Problem Solving: 27, 142, 162, 170, 221

Data Sufficiency: 245, 277, 305, 309

**Official Guide for GMAT Review (2018 edition)**

Problem Solving: 11, 142, 162, 170, 221

Data Sufficiency: 236, 297, 302

**Official Guide for GMAT Review (2017 edition)**

Problem Solving: 11, 123, 146, 154, 194, 221

Data Sufficiency: 236, 283, 287

**Official Guide for GMAT Review (2016 edition)**

Problem Solving: 8, 80, 129, 136, 202, 219

Data Sufficiency: 7, 50, 140

**Official Guide for GMAT Review (2015/13th edition)**

Problem Solving: 10, 68, 107, 173, 193, 215

Data Sufficiency: 3, 39, 125

While answering practice questions from the *Official Guide for GMAT Review* (2019, 2018, 2017, 2016 or 2015), you can enter your responses directly into our downloadable **Improvement Chart**. This will help track your progress and identify areas of weakness.