This post was written by Rich Zwelling. For more GMAT prep tips check out the Knewton blog. Many students like to ask me the following question when dealing with overlapping sets problems: “Which are better? Venn diagrams or charts?” I’ve found that...

Probability questions can be among some of the more advanced and trickier problems you’ll face on the GMAT Quantitative section. Be sure to pay attention to the wording of word problems such as this one; in this case when asked about a scenario...

Math (DS) Is the mean of a non-empty set bigger than its median? 1. All members of are consecutive multiples of 3 2. The sum of all members of equals 75 GMAT Daily Deals Application Boot Camp: 7 Profile Weaknesses and How to Correct Them. Learn more! Need...

In my last post, I covered the theory behind the Denial Test for Critical Reasoning Assumption questions and demonstrated how to do negations properly. If you’re not sure what the Denial Test is or want a refresher on ...

Math (DS) If , , and are midpoints of sides , , and of triangle . What is the area of triangle ? 1. The area of is 2. is an...

Math (PS) Mary and Joe are to throw three dice each. The score is the sum of points on all three dice. If Mary scores 10 in her attempt what is the probability that Joe will outscore Mary in his? (A) (B) (C) (D) (E) GMAT Daily...

Try this advanced GMAT probability question, testing your knowledge of the ins and outs of how probability works. Problem: The events A and B are independent. The probability that event A occurs is 0.6, and the probability that at least one of the events...

Math (DS) If Richard is 3 years younger than his sister, how old will Richard be in 5 years? 1. Two years ago Richard was twice as young as his sister. 2. If Richard’s sister were born 2 years earlier, she would now be twice as old as...

This article was written by Rich Zwelling. For more GMAT prep advice, check out the Knewton GMAT blog. In last week’s post, I discussed how weighted averages are often tested conceptually and thus show up on Data Sufficiency problems. However, even when weighted average...

Tuck’s  close-knit culture and rigorous curriculum make it a school that everyone should look at closely, particularly those who are interested in pursuing careers in the Northeast. But, besides knowing that it’s a top-ranked school with a strong community, how well...