A special type of questions from the topic of time, speed and distance is the one involving sound and motion. The question explains a scenario wherein, there is movement of sound from the source to the observer. In this article, I will try to make the concept a bit simpler than what it looks like. Read more
When it comes to time, speed and distance questions circular motion is almost always a painful topic to deal with. While linear motion is easy to visualize and comprehend, circular is motion is confusing on various levels. In this article, I will try to make it simpler to understand circular motion along with a few good questions. Read more
This is an offshoot of time, speed and distance based questions wherein, you will have races being run by 2 or more people and there would be certain scenarios given which would allow you to find the distance or time by which one person wins races against another. Read more
What is the angle between the two hands of the clock at 5.40?
Sounds familiar? In almost every competitive exam, you will find either a direct question or a question based on application of clocks. All these questions, in reality, are application of circular motion concepts. In this article, we will look at the basic concepts of clocks and how to solve these questions quickly! Read more
This is a concept known to a lot of aspirants but very few tend to think beyond the basic formulae that are present. The questions are generally in an almost unrecognizable format or are a bit different than the textbook questions one has ‘prepared’ for. In this article, I will try to explore the concepts and solve a few tricky examples dealing with number of factors and sum of factors. Read more
The concept is probably the easiest to understand as it deals with the basics of counting but is found to be confusing by many aspirants. Let us take a look at the concepts of conversion of bases and also a few question types that appeared in previous year CAT papers and other entrance tests. Read more
Over the last few days, I have been traveling around the country, interacting with a lot of CAT 2015 aspirants. While there have been quite a few direct content and macro-level strategy queries, a lot of aspirants worry about maintaining high level of concentration and lack of any sort of tiredness throughout the 3-hour window. In this article, I will try to clear a few doubts and suggest a few techniques that might be useful to improve concentration while taking the test. Read more
In this article, we will be looking at rules of indices and surds. Read more
One of the most common yet neglected topics is that involving LCM (Least common multiple) and HCF (Highest common factor) or GCD (Greatest common divisor). The questions look very easy and test basic concepts but then students tend to somehow get confused and overlook certain data points probably due to shaky basics. I will be covering basics of LCM and HCF in this article along with a few questions that might be possible when it comes to CAT 2015. Read more
Over the last few years, almost every CAT paper has had anywhere ranging from 1-2 questions from the topic involving the concept of special division type of either of an+bn or an-bn. While the concept is pretty easy to grasp and apply, many students make careless mistakes and assume a few things they shouldn’t both during prep and during the test. Read more