Let’s take a look at how to use Venn diagrams to solve questions involving three overlapping sets. First,this is what the three overlapping sets diagram looks like. Notice that the

### Venn Diagram v/s Double Set Matrix

Venn diagrams are like Superman – all powerful. They can help you solve almost all questions involving either 2 or 3 overlapping sets. But then, there are some situations in which

### Strategies to solve Data sufficiency problems

Biggie Smalls Strategy #1: Biggie Smalls Consider this Data Sufficiency problem: What is the value of integer z? 1) z is the remainder when positive integer y is divided by positive

### When you get right answer through wrong logic

It is common for test-takers to think in the right direction, understand what a question gives and what it is asking to be found out, but still get the wrong answer.

### Dealing with tangents to a parabola

Considering a two dimensional figure, a tangent is a line that touches a curve at a single point. Here are some examples of tangents: In each of these

### What makes quants questions difficult?

We know that the essentials of the Quant section are pretty simple: advanced topics such as derivatives, complex numbers, matrices are not included, while fundamentals we all learned from our

### How to crack sentence correction without iron clad rules

You can rely on ironclad rules that never varied (the rules for exponents don’t change depending on the context of the problem, for example), but when you do Sentence Correction,

### Pronoun Ambiguity in Sentences

We encounter many different types of pronoun errors on the Verbal Section. Some of the most common errors include: Using a pronoun without an antecedent. For example, the sentence, “Although Jack is very

### Solving problems with lines crossing X or Y axis

Let’s learn about the cases in which lines on the XY plane cross, or do not cross, the x- or y-axis. Students often struggle with questions such as this: Does the line

### Standard Deviation Problems

Let’s look at some questions that involve sets with similar standard deviations such that it is hard to tell which will have a higher SD without properly understanding the way it