On the face of it I’d done a very thin GRE prep. Before walking into the GRE testing center I had taken a practice test, spent two to three hours drilling some of the tougher problems from the GRE official guide, and worked through vocab flashcards, which I quickly abandoned (more on that later). In […]
GMAT to 99th% GRE with Almost No Prep: a GMAT Tutor’s Perspective Read the Full Article »
At his regular hourly rate, Don had estimated the labor cost of a repair job as $336 and he was paid that amount. However, the job took 4 hours longer than he had estimated and, consequently, he earned $2 per hour less than his regular hourly rate. What was the time Don had estimated for
A closed cylindrical tank contains 36pi cubic feet of water and is filled to half its capacity. When the tank is placed upright on its circular base on level ground, the height of the water in the tank is 4 feet. When the tank is placed on its side on level ground, what is the
If n is a positive integer and n^2 is divisible by 72, then the largest positive integer that must divide n is A. 6 B. 12 C. 24 D. 36 E. 48 We get this one a lot in GMAT tutoring sessions. Most people fail to understand what the questions is asking and then just
If n is a positive integer and n^2 is divisible by 72 Read the Full Article »
The probability that event M will not occur is 0.8 and the probability that event R will not occur is 0.6. If events M and R cannot both occur, which of the following is the probability that either event M or event R will occur? (A) 1/5 (B) 2/5 (C) 3/5 (D) 4/5 (E) 12/25
