Words with Similar Meanings and Subtle Differences

March 31st, 2019 by

In the series on confusing words (Part 1, Part 2 and Part 3) we looked at words that sound similar or look similar but mean different things. There is another class of words you should be careful about - these are words that are often used interchangeably (and wrongly at that, I must add). This generally leads to bad writing than bad comprehension when used. You do not need to look far away for instances of not knowing the difference between these similar sounding words. Just ask any MBA aspirant whether have any preferences for specialization and a lot of them say ‘Marketing’. Just fol

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Logical Reasoning Basics – How to solve coin picking / matchstick related problems?

March 30th, 2019 by

In this post, we will learn how to solve Logical Reasoning Problems based on coins and matchsticks picking puzzles. To understand how exactly these kinds of puzzles look like, let’s start the post with a very simple example. The method to solve the example will give better insight so as to how to approach these puzzles. Two smart players A and B are playing a coin game in which they can pick up 1, 2, 3 or 4 coins. They have 78 coins and the player who picks the last coin will lose the game. A and B play alternately and A plays the first move. How many coins should A pick at first so h

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How to solve questions based on At least n in Set Theory for CAT Exam?

March 29th, 2019 by

Questions based on Set Theory can get immensely complicated when you add conditions based such as ‘At least 2’ ‘At most 3’ etc. in them. To be honest, you should be absolutely comfortable with questions dealing with 3 sets and know enough to draw the Venn-diagram in case of 4 sets. We dealt with the idea of Minima and Maxima in Set Theory in this post. Beyond that not much is required, at least for the CAT exam. However, there is one particular type of question that can be asked in MBA entrance exams and that is what this short Blogpost is all about. So, let’s start Ques

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How to Solve Questions on Seating and Circular Arrangement for CAT Exam

March 28th, 2019 by

Arrangement Problems in Logical Reasoning Section of CAT can be most ambiguous of all the problems. This topic includes variety of different subtopics with multiple variation and integration of them. One such topic in arrangements is Seating (or sitting) Arrangements, which is one of the most important and consistent in CAT. I know Seating Arrangement questions can be confusing, Time-consuming and at times brainstorming questions in Logical Reasoning section. But don’t forget that around 3-4 questions are based on this topic in CAT, so answering them correctly can boost your percentile and

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Problems on Grids, Paths, and Chessboards for CAT Exam

March 27th, 2019 by

Permutation and Combination Concepts: Problems based on grids/chessboards are frequently asked among various exams. They appear to be really difficult when encountered for the first time but once we get hands on, they become really simple. The key lies in understanding the basic concepts involved. Although direct questions are rare, there could be questions which test the same concept in a hidden manner. Number of squares in m*m figures In a simple 2*2 figure, it is easy to see that there are 5 squares in total – 4 small ones and 1 large. Again, if you try it in a 3*3

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Inequalities for CAT Exam – Concepts, Questions, and Solved Examples

March 26th, 2019 by

We usually deal with a lot of equations in the Quant Section equating RHS and LHS. In inequalities, we do have LHS and RHS but these are not equal, any of the following case is possible: LHS >= RHS ; LHS > RHS ; LHS < RHS ; LHS <= RHS  Basic rules of operations on inequality: We can add or subtract same number from both sides with no change in the truth of the inequality. If a > b, then a+k > b+k e.g. If 8 > 6 then 8 + 2 > 6 + 2 and if 9 < 5 then 9 - 3 < 5 - 3 We can multiply or divide both sides with the same number, however the sign will depend

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Logical Reasoning Basics – Binary Logic – Liar, Truth Teller, and Alternator

March 25th, 2019 by

In a series of posts, we are going to cover the basics of some DI/LR topics. The first topic of discussion is Binary Logic. In a binary logic problem, we have people who either speak a true statement or a false statement. These people are divided into three categories: Truth-teller: This person will always speak the truth. All the statements made by this person are true. Liar: This person will always tell a lie. All statements made by this person are false. Alternator: This person always alternates between the truth and the lie. If first statement of this person is true, then se

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Basic Probability Concepts for CAT Preparation

March 24th, 2019 by

What are the chances that it will rain today? Which team has odds in favor in today’s cricket match? What is the probability that Sensex will close above 30K today? All these questions pointed towards the chance, the likelihood of happening the uncertain event. And to determine this chance there’s a technique, a special mathematical and statistical subject entirely related to this known as Probability. Probability is nothing else but a chance that some event might occur. More formally, it calculates a numerical value between 0 and 1 that represents the likelihood that an event might occu

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Basics of Data Interpretation – Approximation

March 23rd, 2019 by

Data Interpretation questions typically have large amount of data given in the form of tables, pie charts, line graphs or some non-conventional format. The questions are calculation heavy and typically test your approximation abilities. A very large number of these questions check your ability to compare or calculate fractions and percentages. If you sit down to actually calculate the answer, you would end up spending more time than required and most of us can't afford to lose precious time during competitive exams like CAT, XAT, IIFT etc.  Here are few ideas that you can use for approxim

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Statistics Concepts – Mean, Median, Mode and Solved Examples

March 18th, 2019 by

In this post, we will be discussing mean, median, mode concepts and their solved examples which is a frequently asked topic in XAT and SNAP examination. We will start our discussion with basic concepts of statistics followed by some examples that will help you get a better understanding of the concept. The short tricks to solve some particular questions are discussed during the solution of the question. 1. Mean, Median, Mode Concepts and Properties Mean, median, and mode are three kinds of "averages". There are many "averages" in statistics, but these are, the three most common, and are

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