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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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

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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

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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

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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.

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In our previous post on games and tournaments part-1, we discussed about two of the popular types of questions when it comes to games and tournament questions. So, if you are looking for questions on new types of data representation or questions based on seeding in a tennis tournament, probably you should read that. However, there is another popular type of questions with respect to Games and Tournaments and that is – Football / Hockey tournament questions in which we have to find out Goals scores, winners, ties, etc. In such tournaments, all competitors play a fixed number of matches

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In Logical Reasoning very often we encounter problems based on games and tournaments. The first thing that as a CAT taker you need to realize is that such tournament based format offers the examiner a multitude of options. So, there cannot be a set formula for solving such kind of questions. However, if you look at the CAT papers of past few years – a pattern seems to emerge. Let us discuss couple of them. Type 1: The questions are typically in a set where the data will be either in the standard tabular format or a format which you would never find on Cricinfo or for that matter any o

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Arrangement problems are an integral part of all the curriculum of Logical Reasoning exams. These are the most common exam and you can find them all kind of entrance exams involving aptitude test such as CAT, XAT, SBI PO etc. This signifies the importance of the understanding of these kinds of problems. There are various kinds of arrangement problems linear, circular and table or matrix based complex arrangement problem. And, today We’ll explain these tabular or matrix based complex arrangement problems. Complex arrangement problems are very much similar to linear arrangement problem ex

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To start a business there is always a requirement of an adequate amount of money which in business terms called “INVESTMENT” OR “CAPITAL”. It is not necessary that a person always has enough money to start a business. In this case, he tries to get partners who are interested in his business. Two or more people can get together to do business by pooling their resources. The people who have invested money in the partnership are called PARTNERS. While two or more partners would have invested money, it is not necessary that all of them should be involved in the day to day running

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In this Number of trailing Zeros blog post, We would like to cover these two ideas: Number of trailing zeroes in a Product or Expression Number of trailing zeroes in a factorial (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 occasions 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

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