Beat The GMAT Challenge Question – September 20, 2010

by Beat The GMAT, Sep 20, 2010

[youtube]http://www.youtube.com/watch?v=3zJ6bxYvEwI[/youtube]

Congrats to Soham for being selected as this weeks winner of the Beat The GMAT Challenge Question. Soham will receive Premium Access to Beat The GMAT Practice Questions as a prize. Above you will find the full video explanation to the question below. Before watching the video above, you may want to first review this video about Calculating Combinations in Your Head; the lessons in this video are referenced in the video above:

Time for another Beat The GMAT Challenge Question.Of those who respond with the correct answer, one person will be randomly selected to receive free access to Beat The GMAT Practice Questions. Deadline to enter is 5PM PDT, Tuesday, September 21, 2010. Good luck!

How many unique 12-letter words can be created using 8 As and 4 Bs such that no 2 Bs are adjacent? (For example, the word ABAABABAAABA is permissible, but the word AABBABABAAAA is not permissible, since it has 2 adjacent Bs)

To get more questions like this one, check out Beat The GMAT Practice Questions.