Application of Binomial Theorem for Finding Integral Solutions
Binomial Theorem The formula by which any positive integral power of a binomial expression can be expanded in the form of a series is known as Binomial Theorem. (x + y)n = nC0 xn + nC1 xn-1 y + nC2 xn-2 y2+ ……………..+ nCn yn e.g: (a+b)3= 3C0a3 + 3C1a2b+3C2ab2 + 3C3b3 = a3 + 3a2b + 3ab2 +b3 Note The number of terms in the expansion of (x+ y)n is (n + 1) e. one […]
CAT syllabus and Other MBA Entance Exams Syllabus
CAT Syllabus – Verbal Ability: We are often surprised to see that students tend to confuse MBA entrance syllabus with CAT syllabus. There are many MBA entrance exams in India. Some of the prominent ones are: CAT, NMAT, IIFT, XAT, SNAP, TISS, CMAT and MHCET. Each exam has its own pattern and to some extent […]
Stars and Bars Method : Permutations and Combinations
Stars and Bars Method is also known as partition rule-based Permutation and Combination problems require a specific formula to get the answers. Various questions based on this concept have appeared in competitive exams Like CAT and other management entrance. In this video, we will learn that formula conceptually so that any variation in the questions, […]
Mensuration Formulas for CAT SSC CGL and Other Exams
Mensuration formulas based questions regularly feature in CAT, SSC CGL and other exams. Being a part of geometry, this topic demands that the aspirant be familiar not only with the different formulas of mensuration but also with the other theorems and concepts of geometry. However, the questions from mensuration are less difficult that other types of […]
CAT Logical Reasoning Syllabus and Preparation Tips
The Logical Reasoning and Data Interpretation (LRDI) section of CAT has undergone a significant change over the last few years. In the past CAT papers, the LRDI section had an equal number of questions from LR and DI. But in the past few years, logical based DI sets have replaced the calculation intensive DI sets. […]
Work Equivalent Concept
Work Equivalent Concept is a based on the universal concept of measuring work in two parameters; Agent who is doing work and the duration the work takes to get completed. Let us understand with the help of an example. Suppose the time taken to complete a task by 4 men all of the equal efficiency […]
Mixture and alligation Advance Concepts
Rule of Constant Example 4: How many litres of pure water should be added to 40 litres of 30% milk solution so that the resultant mixture is a 15% milk solution? We can have three different methods to solve the above problems including the rule of alligation. Let us take all of them to strengthen […]
Maxima Minima : AM-GM Concept
AM-GM-HM Concept A wide variety of questions are being framed in this area. There is no thumb rule to solve all these problems. Many a time, simple observation and hit and trial methods of putting the values work. However, to get the results quickly and accurately, there are specific categories of questions which require knowledge of […]
Maxima Minima Concept of Set Theory and Venn Diagram
Maxima Minima Concept based on Set theory or Venn diagram is very important for CAT exam not only in Quant section but more so in LRDI section. Many varieties of questions can be framed from this area. In most of the cases, we are required to find maximum and minimum value in Venn diagram related questions. […]
CAT 17 Verbal Ability Slot 2 Explanations
CAT 17 Verbal Ability Slot 2 Question 25: DIRECTIONS for the question: Identify the most appropriate summary for the paragraph. North American walnut sphinx moth caterpillars (Amorpha juglandis) look like easy meals for birds, but they have a trick up their sleeves—they produce whistles that sound like bird alarm calls, scaring potential predators away. At […]