If 5 integers are to be selected at random and without replacement from the list consisting of the 20 integers from 1 to 20, inclusive, what is the probability that 2 of the 5 selected integers will be 10 and 20 ? A. 2/5 B. 1/4 C. 1/10 D. 1/19 E. 1/60 OK, I’ll be … Read More
The New GMAT Scoring System: What Is a Good Score in 2025? !!!!!!!!!!!!700 IS NO LONGER THE NUMBER TO TARGET!!!!!!!!!!!!! In 2023 there was a significant change to how the GMAT is scored, interpreted, and used by admissions committees worldwide. After the scoring overhaul, myths and outdated score benchmarks continue to dominate test prep forums. … Read More
The Domain of the Function f(x) for GMAT: A Complete Guide When you first start learning about functions in mathematics, you’ll often hear about a concept called the domain. It’s one of those foundational ideas that pops up repeatedly, whether you’re in high school algebra or studying advanced calculus. But what does it really mean … Read More
Five Reasons Using a Calculator Is a Waste of Time on the GMAT or GRE We are taught since grade school that there’s no point to mental math when a machine can do calculations faster and more accurately than our brains. That might be true for the puny brains of your math teachers, but the … Read More
GRE vs. GMAT: Which Test Is Right for Business School Applicants? Note: this is an experiment wherein I let my friend Chet G. Peadey, a generative AI, write a GMAT article. Let’s see how Chet does with respect to writing and data. I’ll put my comments in italics. –Rowan When preparing for business school, one … Read More
If b is a positive integer and b^4 is divisible by 81 GMAT If b is a positive integer and b^4 is divisible by 81, which of the following could be the remainder when b is divided by 9? This is an interesting new question type that has appeared since the Focus questions have been … Read More
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The domain of the function f(x) = \frac(x-1)(x+1) is the set of all real numbers that are: Oof–that’s a huge chunk of code, which I had to put on here just so you could find it! Sorry–let’s try that one again in a way that actually makes some sense… The domain of the function f(x) … Read More