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GMAT Club

GMAT Question of the Day (December 30)

Jeff 0

Math

The sequence a_1, a_2, ... is defined such that a_{n}=\frac{a_{n-1}}{n} for all n \gt 1. How many terms of the sequence are greater than \frac{1}{2}?
(1) a_2 = 5

(2) a_1 - a_2 = 5

Question Discussion & Explanation
Correct Answer - D - (click and drag your mouse to see the answer)

Verbal

This one totally got me stumped..anybody want to take a crack at it and explain?

Because the population is denser there and the automobile is therefore inefficient as a means of transportation, a commuter rail system serving a given population is usually five times more efficient in a European city than it is in an American city.

(A) serving a given population is usually five times more efficient in a European city than it is in an American city

(B) serving a given population will usually be five times more efficient if it is placed in a European city instead of an American city

(C) will usually be five times more efficient in a European city than one serving a comparable population in an American city

(D) in a European city will usually be five times more efficient than will a system serving a comparable population in an American city

(E) that is implemented in a European city will usually be five times more efficient than if it is implemented with a comparable population in an American city

Question Discussion & Explanation

Correct Answer - D - (click and drag your mouse to see the answer)

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