Rakesh Vishwakarma

An IT (Information Technology) engineer from NIT, Raipur and an MBA from Department of Pune University, Rakesh has been a quantitative aptitude trainer for the past 9 years and has worked with organizations such as PT and Career Launcher; he has the knack of teaching multiple concepts through just one question; many of the questions on this website have been designed by him; he has been getting 99 plus percentile in the CAT (Common Admission Test) for the past four years and has been getting calls from the prestigious IIMs. Apart from teaching quantitative aptitude, he is very fond of coding and programming.

pipes and cisterns concepts for CAT

Pipes and Cisterns Formulas Concepts and Questions for CAT Exam

Pipes and Cisterns basic concepts We employ the same basic concepts of ‘Time and Work’ to solve questions based on pipes and cisterns. However, in some instances in addition to inlet pipes, the question also mentions outlet pipes. A pipe connected to the cistern is called an inlet pipe or an outlet pipe, accordingly as it …

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Mixture and Alligation Concepts | Tricks | Formulas for CAT Exam

Table of Content Concepts and Formulas Tricks Rule of Constant Mixing with replacement Two different Mixture Practice Problems Questions from Mixtures and Alligation topic have increased in recent CAT exam. Usually, we apply the concepts and formulas of weighted average, percentages and ratios to solve such questions. A shortcut tricks of the criss-cross method is …

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last two digits

3 steps to find last two digits of a number with power

Last Two digits: The objective of this article is to understand the concept and approach to solve questions like: Find the last two digits of \({2^{234}}\) \({31^{123}}\) \({73^{35}}\) There are two-three shortcut approaches to solve the above problems. But before we go and apply the same, we need to understand the following basic points. Finding …

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