Circles Part -2 : Sample Questions for CAT Exam

May 10th, 2019 by

In the earlier post on circles, we had discussed the properties and some sample CAT questions related to circles. In this post, we will see some additional CAT questions which have been asked in the previous years. Let us look at below examples. Example 1: A one rupee coin is placed on a piece of paper. How many more coins of the same size may be placed such that each touches the central coin and the two adjacent coins? a.) 7 b.) 4 c.) 5 d.) 6 Solution:  It can be seen in the below figure that if we place 3 coins touching each other, their centers form an equilateral tri

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Binomial Theorem – Concept and Applications

May 7th, 2019 by

Binomial Theorem is a very intriguing topic in mathematics due to its wide-ranging application. Before moving forth with its use, let me ask you a question? Do you remember what’s is (a + b)2 or (a-b)2? I guess most of you would have easily say (a+b)2 is a2 + b2 + 2ab and (a2 – b2) is a2 + b2 -2ab. But, what about (a + b)4? Okay, this is something you can still deduce. Let’s make it a little bit more complex, can you tell what the expansion for would be (a + b)7 or (7a – 5b)10. Now, I think it would not that simple to answer as you did earlier. Here’s something where the binomial

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Cube Based Puzzles in Logical Reasoning for CAT Exam Preparation

May 6th, 2019 by

Cubes is one of the most frequently asked puzzle topics in CAT. These puzzles require us to think visually about the puzzle, which makes it somewhat tougher than other type of puzzles. We will discuss the basic concepts of the cube and few things that we would be using is majority of the puzzles related to cubes. Cube related puzzles are asked in a number of ways unlike selection or arrangement puzzles, where the primary pattern remains the same. We will illustrate some of the types of puzzles and the approach one should use to solve such problems. We will focus our discussion on what woul

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CAT Grammar: Introduction to Verb Tenses

May 5th, 2019 by

Verbs and Tenses are the basic parts of English Grammar. We all have studied about verbs and tenses in our school days. But what does verb tenses refer to? If you recollect, the actions words- verbs take various forms depending upon the time frame (present, past, future) as well as state/aspect (simple, perfect, progressive). Hence the name ‘verb tenses’. But how are verb tenses relevant to CAT? Well, questions based on sentence correction check your knowledge of verb tenses. The usage of verb tenses varies according to tense, person, and number. As you know, verbs form an essential

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Circles (Concepts, properties and CAT questions)

May 4th, 2019 by

Concepts of a circle are very important for CAT examinations. There are lots of properties to understand and some formulas to remember. Several direct and sometimes indirect questions are asked from concepts of a circle in CAT exams. Also, some of the geometry questions cannot be solved without having a proper understanding of CAT concepts. Let’s take a look at some of the concepts and CAT questions related to circles. 1. Arc: An arc is just a part of a circle. An arc can be measured in degrees. In the above diagram, the part of the circle from B to C forms an arc. Also, arc BC

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CAT Grammar: Subject-Verb Agreement

May 3rd, 2019 by

Seemingly a basic topic of English grammar, Subject-verb agreement forms an essential part of the English language. But how is it required for CAT preparation? Well, as you know, questions based on sentence correction are commonly asked in CAT and other MBA entrance exams. So, you are expected to be aware of the fundamental rules of subject-verb agreement. While you may think they are just the basic rules, the related questions may seem tricky to handle. Starting with the basic, a sentence, as you know, is composed of two main parts: Subject and Verb. The subject indicates what the se

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How to solve logical reasoning problems based on team selection and group formation?

May 2nd, 2019 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 Memorise and Revise Newly Learnt Words Using Word Roots

May 1st, 2019 by

In the post on learning strategies, I had mentioned Root words which helps to improve your vocabulary by memorising newly learnt words for CAT preparation. Throughout this series on words, we had focused on learning new words by grouping them - confusing words, similar words, idioms etc. Root words are just another way you can group words. A lot words in the English language have originated from Latin (others have their roots in Greek, Sanskrit, German etc.). But why bother learning root words? Will it be of any help in CAT or any other exam (XAT, IIFT, SNAP etc.) The answer is: Yes, it

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Basic Trigonometry Concepts for CAT with Questions

April 30th, 2019 by

Trigonometry is a broad topic and hence we will cover all the concepts and sample examples in a two part post. In this first part, we would discuss concepts, formulae and some sample examples. In the second part of the post, we are following up with some more examples. Trigonometry is the branch of mathematics that deals with the study of relationships between sides and angles of a triangle. It is derived from Greek word, Tri meaning three and Gon means Angle and Metron means Measure. The ratio of the lengths of two sides of a right angled triangle is called a trigonometric ratio.

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Successive Division – Problems and Solved Examples for CAT Exam

April 29th, 2019 by

SUCCESSIVE DIVISION: If the quotient of the dividend is taken and this is used as the dividend in the next division, such as division is called “successive division”. A successive division process can continue up to any number of steps until the quotient in a division became zero for the first time, i.e., the quotient in the first division is taken and divided in the second division; the quotient in the second division is taken as the dividend in the third division; the quotient in the third division is taken as the dividend in the fourth division and so on. If we say that 2479 i

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