How to Find Number of Trailing Zeros in a Factorial or Product

June 12th, 2020 by

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


Successive Division – Problems and Solved Examples for CAT Exam

June 11th, 2020 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


Coordinate Geometry (Concepts, Formulas and CAT questions)

June 9th, 2020 by

There are all sorts of ways that we can find the measurements of lines and angles. We can use rulers to measure lines and protractors to measure angles. In coordinate geometry, we can use graphs and coordinates to find measurements and other useful information about geometric figures. A coordinate graph is a rectangular grid with two number lines called axes. The x-axis is the horizontal number line and the y-axis is the vertical number line. The axes intersect at the origin which is the point (0,0). Coordinate Geometry Formulas: Now, Let us have a look at some formulas fo


Basic Trigonometry Concepts 2 – Questions and Solved Examples for CAT

June 8th, 2020 by

In the earlier part of trigonometry series, we had seen basic concepts and some questions. In this part we will see some additional Examples to understand how to deal with CAT questions Example 1: 5sinx + 12cosx + s is always greater than or equal to 0. What could be the possible smallest value of s? a.) 13 b.) 10 c.) 6 d.) 2 Solution: 5sinx + 12cosx ≥ -s ⇒ 13(5/13sinx+12/13cosx) ≥ -s                  (Since 5,12 and 13 are Pythagorean triplets,) ⇒ 5/13 = cosA ⇒ 12/13 = sin A ⇒ 13(sinx cosA + sinA cosx) ≥ -s ⇒ 13(sin(x + A))


Basic Trigonometry Concepts for CAT with Questions

June 7th, 2020 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.


How to solve problem on Syllogism in CAT Exam?

June 5th, 2020 by

Syllogism is an influential concept of CAT. It has its role in logical reasoning and verbal ability section as well. There are approximately 3-4 questions based on it. And these many questions can play vital role in upgrading your percentile. Thus, it’s important that you understand this topic well so that you can score good in the exam. Let’s first understand what does syllogism mean and then I will tell you some useful techniques that will make solving questions on this topic a facile job for you. Syllogism is a Greek synonym of the word conclusion or inference. A more proper defi


Tones of Passages for Reading Comprehension Questions in CAT Exam

June 4th, 2020 by

Tones of Writing By now, you must be aware of the various types of RC passages as well the different writing styles. Close to the writing style, comes the tone of passage. As you would know, tone-based questions frequently accompany CAT RC passages. So, what is really meant by ‘tone of the passage’? The tone of the passage represents the author’s sentiment or attitude towards the subject being discussed. In other words, it’s the predominant emotion the author displays towards the subject. You probably react differently to different people in same or different situations. You may


Learn the Basics of Time, Speed & Distance for CAT Exam

June 2nd, 2020 by

I guess my first fascination with problems of Time, Speed and Distance began when I first saw Henna. An important part of the story line  if you can call it that, saw Rishi Kapoor floating from India to Pakistan without drowning. I remember arguing with my friends that if could float for that long – he could swim back to India as well. My friends nullified the argument by saying: Speed River > Speed Rishi Kapoor I know that the reference is a little dated for most readers of this post, but Zeba Bhaktiyar made me look beyond reason. In this post we will discuss some of the ideas that


Cube Based Puzzles in Logical Reasoning for CAT Exam Preparation

June 1st, 2020 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