Algebra

Today’s Undertaking: Common Error in GMAT Absolute Value Strategies Even after working extensively on absolute value questions, sometimes students come up with “why?” i.e. why do we have to take positive and negative values? Why do we have to consider […]

Today we will discuss an algebra question on sequences in detail and look at two different approaches – one without using Geometric Progression formula and another with the formula. As I said before, you can solve every sequence question on […]

Today’s Undertaking: What Are Complex Inequalities in GMAT Problem Solving? Sometimes, our given inequalities involve multiple signs such as . How do we handle these complex inequalities? To put it simply – one at a time. This is nothing but two […]

Today’s Undertaking: We have talked about knowing which numbers to plug-in in case you want to use the number–plugging method. To be more exact, we discussed that you need to find the transition points i.e. the points where the two […]

Today’s Undertaking: Let’s discuss the concept of transition points. This is especially useful in questions where you are tempted to plug in values. How Does Plugging-in Values Work in GMAT Algebra Questions? A question often asked is: how do I […]

Today’s Undertaking: Only Logic Questions in GMAT Algebra Without Equation Scenarios If you have been practicing GMAT questions for a while, you will realize that not every question can be solved using pure algebra, especially at higher levels. There will […]

Today’s Undertaking: Let’s discuss the basics of factorials today. Once we do, we will see that most factorial expressions can be easily solved using a single method: taking common! What are Factorials? First of all, what is ()? … Let’s […]

Let’s look at a sequences question today. Check out the previous post that introduces sequences here. It is from GMAT prep test so it is quite indicative of the tricky questions you might get on actual GMAT. Solving the question […]

Today’s Undertaking: Plug-in Method for GMAT We all love to use the plug-in method in Quant questions. We have an equation given and if the options are the possible values of , we just plug in the values and find the […]

Today’s Undertaking: Division by a Variable on GMAT We have often come across test takers confused about division by a variable. When is it allowed, when is it not allowed? Why is it allowed in some cases and not in […]