# GRE Probability

In this module, you'll learn all of the concepts, techniques and strategies needed to answer probability questions on the GRE. In particular, this module covers:

 Finding probabilities by counting Complements “At least” & “at most” questions “Or” probabilities “And” probabilities Mutually exclusive events Independent events

## GRE PROBABILITY VIDEOS

• 1. Lesson: Introduction to Probability (6:42)
• 2. Question: Odd or Even (1:30)
• 3. Question: Sum of 11 (2:35)
• 4. Lesson: The Complement (6:06)
• 5. Question: At Least 1 Even Number (3:39)
• 6. Lesson: Mutually Exclusive Events (3:21)
• 7. Lesson: Probability of Event A OR Event B (4:54)
• 8. Lesson: Applying the OR Rule (2:17)
• 9. Question: Green or Ball (2:13)
• 10. Question: Odd or Prime (2:12)
• 11. Lesson: Probability of Event A AND Event B (3:16)
• 12. Question: 2nd Ball is Yellow (2:35)
• 13. Question: Events Q and R (1:28)
• 14. Lesson: Independent Events (6:25)
• 15. Lesson: Determining Independence (3:52)
• 16. Lesson: Rewriting Questions (5:33)
• 17. Question: Total Number of Balls (2:47)
• 18. Lesson: Listing vs Counting vs Probability Rules (7:40)
• 19. Lesson: General Probability Strategies (2:03)
• 20. Lesson: Guessing Strategies (5:31)
• 21. Question: Draw a Red Chip (1:42)
• 22. Question: Target (2:04)
• 23. Question: 4-Digit Number (3:39)
• 24. Question: Same Color (3:02)
• 25. Question: 2 heads (4:02)
Total viewing time for the GRE Probability module: 91 minutes.

## Practice from the Official Guide

Practice the skills and GRE-specific strategies you learned in this module by answering the following questions from the Official Guide to the GRE (3rd edition):

• 125(5), 162(10), 321(11-14), 322(150)

Here are the related questions in the Official Guide to the GRE (1st or 2nd edition):

• 120(5), 152(10), 297(11-13), 298(14-15)

Note: The above practice questions are listed in the form page#(question#). So, for example, 120(5) represents question #5 on page 120.