Andrew Geller

Andrew Geller is a top GMAT tutor based out of New York City. Throughout his career he has successfully taught people from many different backgrounds, countries, and starting scores.

Last year 26 members of a certain club traveled to England, 26 members traveled to France, and 32 members traveled to Italy. Last year no members of the club traveled to both England and France, 6 members traveled to both England and Italy, and 11 members traveled to both France and Italy. How many members of the club traveled to at least one of these three countries last year?

Last year 26 members of a certain club traveled to England, 26 members traveled to France, and 32 members traveled to Italy. Last year no members of the club traveled to both England and France, 6 members traveled to both England and Italy, and 11 members traveled to both France and Italy. How many members […]

Last year 26 members of a certain club traveled to England, 26 members traveled to France, and 32 members traveled to Italy. Last year no members of the club traveled to both England and France, 6 members traveled to both England and Italy, and 11 members traveled to both France and Italy. How many members of the club traveled to at least one of these three countries last year? Read the Full Article »

If k is an integer and (.0025)(.025)(.00025)10^k is an integer, what is the least possible value of K?

If k is an integer and (.0025)(.025)(.00025)10^k is an integer, what is the least possible value of K? (A) -12 (B) -6 (C) 0 (D) 6 (E) 12 Correct Answer: E Full explanation coming soon. Send us a note if you’d like this added to the express queue! You’ll find tons of practice questions, explanations

If k is an integer and (.0025)(.025)(.00025)10^k is an integer, what is the least possible value of K? Read the Full Article »

The annual rent collected by a corporation from a certain building was x percent more in 1998 than in 1997 and y percent less in 1999 than in 1998. Was the annual rent collected by the corporation from the building more in 1999 than in 1997?

The annual rent collected by a corporation from a certain building was x percent more in 1998 than in 1997 and y percent less in 1999 than in 1998. Was the annual rent collected by the corporation from the building more in 1999 than in 1997? (1) x > y (2) xy/100 < x−y A.

The annual rent collected by a corporation from a certain building was x percent more in 1998 than in 1997 and y percent less in 1999 than in 1998. Was the annual rent collected by the corporation from the building more in 1999 than in 1997? Read the Full Article »

The sequence a1 a2….an is such that an = (an-1 + an-2)/2 for all n≥3. If a3=4 and a5=20, what is the value of a6?

The sequence a1 a2….an is such that an = (an-1 + an-2)/2 for all n≥3. If a3=4 and a5=20, what is the value of a6? (A) 12 (B) 16 (C) 20 (D) 24 (E) 28 Correct Answer: E Full explanation coming soon. Send us a note if you’d like this added to the express queue!

The sequence a1 a2….an is such that an = (an-1 + an-2)/2 for all n≥3. If a3=4 and a5=20, what is the value of a6? Read the Full Article »