Divisibility Rules for CAT Quantitative Aptitude Preparation

March 30th, 2020 by

The concept of ‘divide and conquer’, derived from the Latin phrase ‘Divide et impera’, was put into use effectively by everyone from Caesar to Napoleon to The British in India. Even Gaddafi tried using the same but as current events show us – he wasn’t very effective. Dividing rather divisibility rules to be specific can come in really handy at times in solving problems based on Number Systems. The standard rules which nearly all of us are very comfortable with are the ones for 2n and 5n. For these all that one needs to do is look at the last ‘n’ digits of the number. If

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CAT Quant – Escalator Based Problems in Time, Speed, and Distance

March 28th, 2020 by

Escalators has now become a topic from which questions are asked quite frequently in CAT. Today, we are going to see the theory behind escalator questions and solve them through both equations and ratios. Once you are through with the concept and are able to solve the questions in this article, you can solve any question from this topic Escalator questions are very similar to the upstream and downstream questions. In a stream, the direction of flow of water is constant whereas, the escalators move in both directions. Escalator questions can be confusing as sometimes, questions might not

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Number System Concepts for CAT – Even Factors, Odd Factors, Sum of Factors

March 26th, 2020 by

let me first list down the topics that I am going to cover in this particular blogpost: Number of factors of a given number Number of even factors or odd factors of a given number Sum of all factors of a given number Sum of all even factors or odd factors of a given number   We know that a number N can be written as a product of its factors as given below   N = ap x bq x cr … Here a,b,c… are prime factors of N & p,q,r … are the powers of the prime factors of N.   In such a case the number of factors of N are given by the formula &

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CAT 2019 Preparation Plan for 100 Days – Quantitative Aptitude

August 14th, 2019 by

It can be argued that Quantitative Aptitude is the section that makes the most amount of difference in the CAT results every year. If you look at the data from the past few years, you would realize that the Logical Reasoning and Data Interpretation section has remained the toughest section. You normally need to do only 9 questions in it to score a 90%ile. Verbal Ability and Reading Comprehension has remained the easiest section over the years where you have needed to score around 16-18 questions to get a 90 %ile. Quantitative Aptitude, on the other hand, varies a lot. You would need around

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Remainders (Quantitative Aptitude) for CAT Exam Preparation – Free PDF for Download

July 31st, 2019 by

Remainders, as a topic, confuses a lot of students. As a matter of fact, a large percentage of CAT quantitative Aptitude questions and doubts on any public forum (Pagalguy / Quora / Facebook) will be dealing with remainders. This is true for the Course Feed of my online CAT coaching course as well. So, I decided to combine all the various kinds of Remainder related questions and make a single post about it. I hope that if you go through the 50+ questions given in this post, you will never struggle with remainders again. In case you have any doubts with any of the questions, use the commen

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Cyclicity of Remainders for CAT Exam

July 30th, 2019 by

Cyclicity of Remainders In this post I would like to discuss some of the really fundamental ideas that can be used to solve questions based on remainders. If you have just started your preparation for CAT Exam, you might find this article helpful. First of all, What I am trying to say above is that if you divide a^n by d, the remainder can be any value from 0 to d-1. Not only that, if you keep on increasing the value of ‘n’, you would notice that the remainders are cyclical in nature. What I am trying to say is that the pattern of remainders would repeat. Let me try to

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Quantitative Aptitude Questions in the CAT Exam – A Complete Analysis

July 29th, 2019 by

Quantitative Aptitude is an important part of the CAT Exam. As a matter of fact, it will not be wrong to say that it is the most important part of the CAT exam because the most amount of time is spent on preparation of the Quantitative section. Should it be that way? – Perhaps the answer is yes for a few students but the actual number of CAT aspirants who make Quant their top priority is much larger than it needs to be a reason. And do you know the reasons behind that? First and foremost, it is the inherent fear of Math. We are often afraid of what we do not understand fully and Quant

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Geometry Fundas for CAT Quantitative Aptitude Preparation – Part 2

June 6th, 2019 by

In the previous post we discussed lines, triangles, parallelograms, trapeziums, polygons etc. Now, we will discuss other expanses of geometry which are vital as, the questions on these topics are asked repeatedly in CAT. Let us look at few of the fundas / formulae on these topics that are often neglected by students and can fetch some crucial marks in the exam. Funda 1: Angle made by Secants       2 .   In both these cases, PA * PB = PC * PD   Funda 2: Common Tangents     eg: Note: The two centers

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Geometry Fundas for CAT Quantitative Aptitude Preparation – Part 1

June 5th, 2019 by

I got a lot of feedback via emails and texts that people are looking for a post on geometry. I have been avoiding it for sometime because of two main reasons: a)      It is not one of my strong areas. b)      It takes a lot of time to draw the diagrams that are sometimes required to explain the fundas. The questions on geometry are the trickiest and consumes the maximum amount of time as compared to the questions on other topics in Quantitative aptitude that is why, I have compiled a list of fundas that you might find helpful in solving CAT level questions. I am splittin

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How to find Rank of a Word in Dictionary (With Repetition and Without Repetition)

May 29th, 2019 by

A very common type of question that gets asked in various banking and management entrance exams is based upon the concept of finding out the rank of a word. In this post, I will like to discuss the concept behind the same. Let us look at the two types. Rank of a word - without repetition of letters Suppose that you are given a word in which none of the letters are repeated and you asked to find out the rank of the word in a dictionary. For example, if the word which was given to you was CAT, it will be very easy to find out its rank. You will write down all possible combinations of

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