Finally, in Choice (E), the nn = 1(1) = 1, which is not even-eliminate (E). Next, n(n + 3) = 1(1 + 3) = 4 is even and hence the answer is possibly (D). Next, 2n + 3 = 2(1) + 3 = 5 is not an even integer-eliminate (C). Next, n/4 = 1/4 is not an even integer-eliminate (B). In Choice (A), 3(1) + 2 = 5, which is not an even integer. So choose an odd integer for n, say, 1 and substitute it into each answer-choice. If n is an odd integer, which one of the following is an even integer? In the substitution method, we choose numbers that have the properties given in the problem and plug them into the answer-choices. It often reduces hard problems to routine ones. Substitution is a very useful technique for solving GRE math problems. So if you find yourself performing long calculations or applying advanced mathematics-stop. The premise is that if you spend a lot of time working out long solutions you will not finish as much of the test as students who spot the short, simple solutions. The intent of the math section is to test how skilled you are at finding the simple solutions. Other than increasing your mathematical maturity, little you learned in calculus will help on the GRE.Īs mentioned above, every GRE math problem has a simple solution, but finding that simple solution may not be easy. If you have taken a course in calculus or another advanced math topic, don't assume that you will find the math section easy. Although the questions require only basic mathematics and all have simple solutions, it can require considerable ingenuity to find the simple solution. This way students who majored in math, engineering, or science don't have an undue advantage over students who majored in humanities. The medium of basic mathematics is chosen so that everyone taking the test will be on a fairly even playing field. However, this does not mean that the math section is easy. The mathematical skills tested are very basic: only first year high school algebra and geometry (no proofs). The questions can appear in any order.Ībout 5 Graphs LEVEL OF DIFFICULTY of the GRE Math SectionĮxcept for the graphs, GRE math is just like SAT math, though surprisingly slightly easier. The section is 45 minutes long and contains 28 questions. They are designed to test your ability to solve problems, not to test your mathematical knowledge. The math section consists of three types of questions: Quantitative Comparisons, Standard Multiple Choice, and Graphs.