GMAT Probability | GMAT Prep Now Online Course

GMAT Probability Tip

For many GMAT probability questions, you can apply the basic probability formula or you can apply the various probability rules. So, be sure to consider your options before going ahead with one approach.

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In the GMAT Probability module, you will learn all of the concepts, techniques and strategies needed to answer probabilityquestions on the GMAT. In particular, the GMAT Probability module covers the following topics:

Finding probabilities by counting
Complements
“At least” & “at most” questions
“Or” probabilities

“And” probabilities
Mutually exclusive events
Independent events

GMAT PROBABILITY VIDEOS

1. Lesson: Introduction to Probability (6:42)
2. Question: Sum of 11 (2:35) BUY
3. Lesson: The Complement (6:06) BUY
4. Question: At Least 1 Even Number (3:39) BUY
5. Lesson: Mutually Exclusive Events (3:21) BUY
6. Lesson: Probability of Event A OR Event B (4:54) BUY
7. Lesson: Applying the OR Rule (2:17) BUY
8. Question: Red or Green Ball (3:06) BUY
9. Lesson: Probability of Event A AND Event B (3:16) BUY
10. Question: 2nd Ball is Yellow (2:35) BUY
11. Lesson: Independent Events (6:25) BUY
12. Lesson: Determining Independence (3:52) BUY
13. Lesson: Rewriting Questions (5:33) BUY
14. Question: Total Number of Balls (2:47)
15. Lesson: Listing vs Counting vs Probability Rules (7:40) BUY
16. Lesson: General GMAT Probability Strategies (2:03)
17. Lesson: Guessing Strategies (5:31) BUY
18. Question: Green Ball (2:24) BUY
19. Question: Target (2:04) BUY
20. Question: Yellow Ball or Red Ball (2:13) BUY
21. Question: Same Color (3:02) BUY
22. Question: 2 heads (4:02) BUY
23. Question: Socks (4:40) BUY

Total viewing time for the GMAT Probability module: 91 minutes.

Additional Practice

Practice the skills and GMAT-specific strategies you learned in this module by answering the following categorized questions for GMAT Probability:

Official Guide for GMAT Review (13th edition)
Problem Solving: 10, 68, 107, 173, 193, 215

Data Sufficiency: 3, 39, 125

Official Guide for GMAT Review (12th edition)
Problem Solving: 12, 67, 105, 158, 174, 214

Data Sufficiency: 3, 107

Official Guide for GMAT Quantitative Review (2nd edition)
Problem Solving: 79, 160

Data Sufficiency: 122

Track your progress by entering answers directly into our free, downloadable GMAT Prep Now Improvement Chart for the Official Guide (13th edition)

Improvement Chart for the Official Guide (12th edition)