Boats and Streams: Formulas Concepts and Questions for CAT Exam
Boats and Streams is an essential topic for many competitive exams. Many varieties of questions can be framed from this area. We use the fundamental concepts of time speed and distance only to solve elementary questions on Boats and Streams. However, some types of questions are tricky and take lots of time to solve by […]
Profit and Loss: Basic Concepts and Shortcuts for CAT Exam
Profit and loss based problems in CAT can easily be solved by applying the fundamental concepts of percentages. The following basic terms are widely used while solving problems on profit and loss. Hence, a clear understanding of each of these terms is essential. Terminologies in Profit and Loss Cost Price (C.P): The price at which an […]
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 […]
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 […]
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 […]
AM-HM Concept : Time Speed and Distance
AM-HM Concept: The AM-HM concept states that if the speeds are in arithmetic progression/ harmonic progression then, the corresponding time taken are in harmonic progression /arithmetic progression and vice versa. Note: We use this AM-HM concept only when the same distance is traveled at different speeds. Here is the proof of AM-HM Concept Say, a […]
CAT 2017 LRDI Set 01 [Video Solution]
CAT 2017 LRDI SET 01 Below find the LRDI Set which appeared in CAT 2017. The set is of moderate difficulty level. Serious and well-prepared aspirants should be able to solve the same within 12 minutes. At the end of the set, you will find the detailed video solution of the set. Logical Reasoning Questions […]