GMAT Question of the Day (Dec 30): Arithmetic and Critical Reasoning

By - Dec 30, 02:00 AM Comments [0]

Math (PS)

What is \frac{1}{2} + \big(\frac{1}{2}\big)^2 + \big(\frac{1}{2}\big)^3 + \dots + \big(\frac{1}{2}\big)^{20} between?

(A) \frac{1}{2} and \frac{2}{3}
(B) \frac{2}{3} and \frac{3}{4}
(C) \frac{3}{4} and \frac{9}{10}
(D) \frac{9}{10} and \frac{10}{9}
(E) \frac{10}{9} and \frac{3}{2}

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

GMAT Daily Deals
  • Only Knewton Gmat prep gives you access to >3,400 GMAT practice questions, all online. Save $351 @ GMAT Club. $351 savings @ GMAT Club!
  • GMAT below 720? Let Aringo help you get accepted at top MBA Progams. GMAT Club Special = 30% off! Save today!
  • Amerasia Consulting: 10% off OR sign up for 3 schools and get a 4th free thru GMAT Club. Sign up now. Learn more!
  • Stratus Prep has served clients from across the country and around the globe. Save up to $500 @ GMAT Club. Learn more!

Verbal (CR)

Some geologists argue that if oil is as common in unsampled areas of the world as it is in those already sampled, our current estimate of reserves that exist underground must be multiplied by a factor of 10,000. From this we can conclude that we can meet the oil needs of the entire world for at least five centuries, even assuming that future consumption grows at an accelerating rate.

To reach the stated conclusion, the author must assume which of the following?

(A) It is possible to recover the oil contained in unexplored areas of the world
(B) The consumption rate for oil will not grow rapidly
(C) Oil will remain an important energy source for at least 500 years
(D) The world will achieve and maintain zero population growth
(E) New technology will make oil discovery and drilling more feasible than ever before

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

Like these questions? Get the GMAT Club question collection: online at GMAT Club OR on your Kindle OR on your iPhone/iPad

Browse all GMAT Questions of the Day

Subscribe to GMAT Question of the Day: E-mail | RSS

Leave a Reply

[0] Comments to this Article