Free Class on Decision Making for XAT 2015

December 4th, 2014 by

Free class on Decision Making for XAT 2015 It will be held online on Sunday, 7th December, 7 PM It will cover the following: 1. Basic concepts of Decision Making 2. Tips to score more in Decision Making section 3. Analysis of XAT 2014 Decision Making section 4. Suggestions for XAT 2015 Decision Making To register, click on the green button given below. A popup would appear. Enter your details. It will then ask you to share the link on Facebook or twitter. Do that. On Sunday, we will email you a link on which you can attend the live class online. In case you are not able to att

Read More


Decision Making for XAT – An Introduction

December 2nd, 2014 by

Decision Making has become an integral part of XAT over the last few years. As of now, in terms of marks it is more important than Quant or Verbal or DI. It will not be wrong to say that Decision Making is the most important part of the XAT. The problem, however, is that not too many students prepare for it. Decision Making is probably the easiest section in the paper. XAT is traditionally a low scoring exam and that makes it even more important. These are easy 15 marks that you can get, provided you are willing to put in couple of hours a day to prepare for it. First of all, let us tr

Read More


Divisibility Rules

January 22nd, 2014 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 the

Read More


Factor Theory

January 22nd, 2014 by

Factor Theory   I understand that the title might be a little misleading but at least I could not come up with something better. So before you end up getting disappointed, 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

Read More


Dealing With Factorials

January 22nd, 2014 by

Dealing with Factorials   We all know what factorials (n!) are. They look friendly and helpful but looks can be deceiving, as many quant problems have taught us. Probably it is because that Factorials are simple looking creatures, most students prefer attempting questions based on them rather than on Permutation & Combination or Probability. I will cover P&C and Probability at a later date but in today’s post I would like to discuss some fundas related to factorials, which as a matter of fact form the basis of a large number of P&C and Probability problems.  

Read More


Number of trailing Zeros

January 22nd, 2014 by

Number of Trailing Zeros   In this blog post, I would like to cover these two ideas: Number of trailing zeroes in an expression Number of trailing zeroes in n!   But before I begin, let us first try to understand what exactly are ‘trailing zeroes’. It is nothing else but the number of zeroes at the end. I do not want to sound pedantic but on many occassions when you see a question which asks about, “What is the number of zeroes in ___” it is incorrect, because it should actually say – “What is the number of trailing zeroes?” or “What is the number of e

Read More


Baisc Idea of Remainders

January 22nd, 2014 by

Basic Idea of Remainders Figuring out the last digit is the same as figuring out the remainder of a number when divided by 10, but I guess you already know that. Figuring out the last two digits is the same as figuring out the remainder of a number when divided by 100. However, if you wish to figure the remainder when the divisor is not 10 or 100, I suggest you read on. Funda 1: Basic idea of remainders can be used to solve complicated problems.       There is nothing special or unique about this idea. At first glance it seems like something really obvi

Read More


Geometry Fundas -1

January 22nd, 2014 by

Geometry Fundas-1   I got a lot of feedback via comments on my previous posts 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. With Diwali and CAT approaching I realized that I could not procrastinate anymore because Geometry, as you would agree, is a very important part of CAT-prep. I have compiled a list of fundas that you might find helpful in solving CAT l

Read More


Quadratic Equations

May 6th, 2013 by

Quadratic Equations are first taught to us in 6th or 7th class and most of us are able to score good marks in it because we are able to solve 90% of the questions by just using that formula. And that formula is: The above formula gives us the roots of the quadratic equation ax2 + bx + c = 0 For this post, I am assuming that you are aware of the basics of quadratic equations and know how to use the above mentioned formula. In case you are not, spending five minutes on the wiki page of Quadratic Equations won’t hurt. Wikipedia can be daunting at times, so come back here as soon as yo

Read More


Basics of Data Interpretation – Approximation

May 6th, 2013 by

Basics of Data Interpretation - Approximation   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.  Here are few ideas that you can use for approximation.   Funda 1 – Calculating (Appro

Read More