Questions on Logarithm have been asked in exams like CAT and XAT almost every year. More often than not, they are on the easier side but students get scared because they do not understand the concepts properly and hence are unable to attempt them under pressure. In this post, we will try to help CAT aspirants overcome that fear. Let us start with some basics about logarithms. Basic Concept of Logarithm When ax  = N , then we say that x = logarithm of N to the base a and write it as x = logaN . In simple words, it represents the power to which a number must be raised. Let me expand on

Read More...

Set Theory is a very important branch of mathematics that has wide ranging applications. It is a very basic and easy concept but has significant use in Algebra, Logic, Combinatorics, probability etc. Thus, for the same reason understanding of this topic is of grave importance to solve various questions in competitive exams such as Banking and MBA entrance exams. A set is nothing but a collection of distinct objects. The objects could be anything numbers, letters, vectors, etc.  For ex, all the students in a class can be grouped into a set or integers such as 2, 3, 4 can form a set etc.

Read More...

Blood relations are of considerable part of CAT and other MBA entrance exams. Around 3-4 questions make up its logical reasoning section. This topic is a scoring one if you are smooth with the understanding of family relations and family tree otherwise it can prove to be messy, confusing and time consuming. In recent times, we are most likely been detached with our family members and most live in nuclear families unlike in past times when the concept of Joint Families was an apparent part of our lifestyle. Thus, most of us hardly possess the idea of how family relations are intertwined and

Read More...

Nowadays, everything revolves around data, all major decisions are made by first collecting the mass information and then analyzing the raw data. Whether it may be a small firm, a giant MNC or governments all rely on the inferences made on this massive data. Thus, we cannot undermine the resourcefulness and significance of data. But mere collecting data is not sufficient. You have to consider that while collecting the data all the relevant information required to make inferences is covered otherwise the whole exercise of collecting and interpretation of the data proves to be a futile activit

Read More...

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

Read More...

Sequential output is basically output of a machine which is working on a fixed sequence. We start with an input and following a fixed pattern or sequence machine gives us the final output. In these type of questions, we observe that input output process in different steps and try to find out the pattern and sequence on which the machine is working. Importance from exam point of view – These questions looks dangerous but actually these are scoring questions in exams, it doesn’t take much time in solving. Pattern of questions- In all type of questions, there is a sequence given but somet

Read More...

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 of Remainders:  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 obvious. But it is it

Read More...

A pipe is connected to a tank or cistern. It is used to fill or empty the tank; accordingly, it is called an inlet or an outlet. Inlet: A pipe which is connected to fill a tank is known as an inlet. Outlet: A pipe which is connected to empty a tank is known as an outlet. Problems on pipes and cisterns are similar to problems on time and work. In pipes and cistern problems, the amount of work done is the part of the tank of filled or emptied. And, the time taken to do a piece of work is the time take to fill or empty a tank completely or to a desired level. Pipes and Cisterns Po

Read More...

Time, Speed, and Distance is a very crucial topic in quantitative aptitude section of CAT, SNAP, XAT etc. Every year 4-5 questions are asked from this topic. We all have done questions based on Time and Distance in our high school maths but you might not be acquainted with this very significant part of the application of this concept knowns as Linear and Circular Races. You might have done some simple problems based on this concept but not enlightened with its model and theory. In this blog, I will provide you a summarized knowledge of this concept along with it’s application in forms of

Read More...

In this post, we will discuss all the concepts we will require while solving questions related to games and tournaments. This topic can sometimes involve some basic understanding of the games mentioned in the puzzle. One should know some common terminologies used by the examiners in the questions. We need to analyze the data given before attempting any questions, which could make it a little time consuming if we are not familiar with the concepts. Broadly, we have two types of game structures that are used in making the puzzles. We can expect most of the puzzles based on these structures.

Read More...