# GRE Counting

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

 The Fundamental Counting Principle Factorial notation Handling restrictions “At least” & “at most” questions The MISSISSIPPI rule Combination questions Permutation-type questions

## GRE COUNTING VIDEOS

• 1. Lesson: Listing and Counting (3:53)
• 2. Question: Distributing Coins (2:19)
• 3. Lesson: The Fundamental Counting Principle (4:48)
• 4. Lesson: Fundamental Counting Principle Example (3:18)
• 5. Lesson: Counting Strategies - Part I (0:56)
• 6. Question: 3-Digit Odd Numbers (1:55)
• 7. Question: Test Answers (1:49)
• 8. Lesson: Factorial Notation (3:19)
• 9. Question: Math with Factorials (0:31)
• 10. Question: Books on a Shelf (2:29)
• 11. Lesson: Handling Restrictions (5:12)
• 12. Question: Numbers with at Least One 7 (4:12)
• 13. Lesson: MISSISSIPPI Rule (3:10)
• 14. Question: Number of Routes (2:15)
• 15. Lesson: Introduction to Combinations (4:25)
• 16. Lesson: When to use Combinations (8:15)
• 17. Lesson: Calculating Combinations (4:46)
• 18. Question: Committee of 4 people (2:26)
• 19. Lesson: Counting Strategies - Part II (1:50)
• 20. Question: Arranging Buttons (1:17)
• 21. Question: Evening Out (1:02)
• 22. Question: Bicycle with Optional Features (3:43)
• 23. Question: Committee of 2 Men & 2 Women (2:44)
• 24. Question: 2 Repeated Digits (3:11)
• 25. Question: Committees without R and S (3:30)
• 26. Question: Product Codes (4:08)
• 27. Question: Choose R Employees (2:12)
Total viewing time for the GRE Counting module: 84 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):

• 167(7), 320(6), 321(7-10)

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

• 157(7), 297(6-10)

Note: The above practice questions are listed in the form page#(question#). So, for example, 157(7) represents question #7 on page 157.