GMAT Challenge Question

This week we have another GMAT problem solving question from PrepForTests. This time it’s on exponents.

What is the sum of the 20th and 21st terms in the sequence 1, 3, 9, 27… where each term is 3 times the preceding term?

1. 4 x 3^19
2. 10 x 3^19
3. 4 x 3^20
4. 10 x 3^20
5. 3^39

Check your answer.

Interested in reading more? Click HERE to see more test prep advice.

Leave a Reply

Your email address will not be published.
*
*

This site uses Akismet to reduce spam. Learn how your comment data is processed.

Contact

(323) 934-3936
info@StacyBlackman.com

Latest Blog Post

MBA Applicants, Listen Up: Perfection Not Required

There’s no such thing as a “perfect” B-school candidate. It’s far more common for MBA applicants to have some form of “weakness” or “flaw” they must address head-on in their application. This might include: ...