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

September 21st, 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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Divisibility Rules for CAT Quantitative Aptitude Preparation

September 19th, 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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Words from Books and RC Passages

August 24th, 2020 by

In one of the earlier posts on this blog, we had discussed the important books for CAT preparation and how reading helps with tackling the verbal ability section. If you go through a lot of the reading comprehension passages asked in exams you will realize they are similar in tone to these books or newspaper articles and that is why reading helps. But just reading will not help. To really shave off time required in answering a question (especially in RCs) it is best if you know what the words mean eliminating the need to guess or take time to understand what the passage is talking about

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Understanding Confusing Words – Part 3

August 5th, 2020 by

This is the last post in the series on confusing words. If you haven't read them already, check out Understanding Confusing Words – Part 1 and Understanding Confusing Words – Part 2. where we have discussed a list of important words that you should know if you want to save some time in the verbal section of CAT, IIFT, XAT or any other MBA entrance exam. In this post, we will first look at a few more words and then we will talk about how to use of the words you have learnt through these posts. Why is this important? Because skimming through blog posts will not help much. When you’re re

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Understanding Confusing Words – Part 2

August 4th, 2020 by

In the Understanding Confusing Words – Part 1, we discussed confusing words. As discussed Learning New Words – Why, How and Strategies, these words are not directly related to CAT prep for the vocab section or for any MBA exam (so don't expect direct questions based on these words) but knowing the right words and the correct usage will make your job much easier while attempting questions. Let us extend the list with a few more words. Prescribe vs. Proscribe - These similar sounding words have very different meanings. Prescribe is the more common word, and it's often used at the docto

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Understanding Confusing Words – Part 1

August 3rd, 2020 by

In the last post we looked at some ways to learn new words - reading with context, flashcards, word group lists and studying by comparing words. We had discussed about identifying words that are confused easily. In this post we will look at some examples involving these confusing words. Now, will a misunderstanding cost you marks in the exam? Not necessarily so, because like we discussed last time, no questions simply ask for meanings of words. However, when you’re reading a block of text and reach this word where you are not quite sure of the meaning, that is enough to cause a problem.

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Geometry Fundas for CAT Quantitative Aptitude Preparation – Part 1

July 26th, 2020 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 solve logical reasoning problems based on team selection and group formation?

July 22nd, 2020 by

In this post, we will learn about logical reasoning concepts on selection and group formation that is frequently asked in CAT exam. This topic generally deals with the selection of a team of say ‘r’ members from ‘n’ (n>r) available for selection or it can be the selection of committee of certain number of members. Certain number of constraints drives this selection. In order to understand these constrains and the implicit details related to them, let us start the discussion with an example. Question: Among five students of group I – A, B, C, D, E and six students of group I

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How to solve Logical Reasoning questions based on Ranking and Ordering

July 14th, 2020 by

Logical reasoning questions based on ranking involve ordering people/objects based on certain characteristics like height/weight/score etc. In these types of questions, you are supposed to place people/objects in a decreasing or increasing order based on certain attributes. There is not one common method to solve ranking problems and strategy should vary with questions. But there are certain key-steps that can be applied while approaching such questions. They are: Convert written clues into visual clues so that you would not need to read the text again and again and would be able to

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Quadratic Equations – Concepts and Questions with Solutions for CAT Exam

June 26th, 2020 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 a

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