There are several GRE question banks available that include a collection of previous year questions. These question banks are designed to help students prepare for the GRE exam by providing them with a comprehensive set of practice questions that closely resemble the actual exam. Here are some details about these question banks:

1. GRE Official Guide
- The GRE Official Guide is published by the makers of the GRE, Educational Testing Service (ETS).
- It includes a large collection of real GRE questions from previous years.
- The questions are organized by topic and difficulty level, allowing students to focus on specific areas of weakness.
- The Official Guide also provides detailed explanations for each question, helping students understand the reasoning behind the correct answers.

2. Magoosh GRE Question Bank
- Magoosh is an online test prep company that offers a comprehensive GRE preparation course.
- The Magoosh GRE Question Bank includes over 1,000 practice questions that cover all sections of the GRE exam.
- The questions are similar in style and difficulty to those found on the actual GRE.
- The question bank also provides detailed explanations and video explanations for each question, allowing students to learn from their mistakes.

3. Manhattan Prep GRE Question Bank
- Manhattan Prep is a leading test prep company that offers a range of GRE preparation resources.
- The Manhattan Prep GRE Question Bank includes over 5,000 practice questions, including a collection of real GRE questions from previous years.
- The questions are organized by topic and difficulty level, allowing students to focus on specific areas of weakness.
- The question bank also provides detailed explanations for each question, helping students understand the reasoning behind the correct answers.

Overall, these GRE question banks are valuable resources for students preparing for the exam. They provide a wide range of practice questions that closely resemble the actual GRE, allowing students to familiarize themselves with the test format and improve their problem-solving skills. Additionally, the detailed explanations provided with each question help students understand the concepts and strategies needed to answer similar questions correctly on the exam.