## [Aptitude] Permutation Combination made easy without Formulas

If the following questions make you uncomfortable, then read this article. In how many ways can 5 member committee be formed out of 20 students? Or How many ways can the word “UPSC” be arranged so that “U” is always second from left. In [...]

## [Aptitude] Trains, Platforms TSD (Time,Speed,Distance) made easy

Main-Topic: Time, Speed Distance (TSD) Subtopic: Trains and Platforms. you’ll be given some data and asked to find the length of railway platform or speed of train etc. Visualizing the Concept: Train and Pen Case 1: One Train One Man (or Tree, Pole) Case 2: One [...]

## [Aptitude] Probability Made Easy (Extension of Permutation Combination Concept!)

Introduction Case1 : Probability of Particular Actor getting selected Case 2: Probability of One lady getting selected Case 3: One man and one woman (“AND” case) Case 4: “Atleast” one man is selected (“OR” case) Alternative method: 1 Minus Case 5: Probability of [...]

## [Aptitude] Alligations,Mixtures,Alloys: Water,Milk,Wine mixing: Weighted Average Made Easy for CSAT,CAT,CMAT,IBPS Aptitude

Easy Wine and Water Mixing Problem Two Solutions: Selling Price of Wine and Profit Dilution by adding Water in the Wine Average Profit / Interest Rate: Jethalal’s Mobile shop Average weight of Group : Gokuldham society’s case Recommended Booklist Previous Articles Introduction Mixture, Alligation [...]

## [Aptitude] Boats and Streams made-easy using our STD-Table Method

Case#1: Basics Case 2: Time same but Different distance covered in each case Case #3: unknown variables Previous Articles I hope you’ve mastered the STD table method from earlier articles on Time and Work / Pipes and Cistern. We can use that STD method even [...]

## [Aptitude] Family Trees & Blood Relations: Logical Arrangement Made Easy

Introduction Dataset #1 Step 1: Gender and Generation table Step 2: Checklist Questions based on the Family-Data Dataset #2: UPSC CSP’2000 Step #1: Gender and Generation table Step-2: Run the checklist Step-3: Solve the Question Do eliminate wrong options Keep a Watch on [...]

## [Aptitude] Partnership and profit-sharing made Easy for CSAT IBPS CAT

Case 1: Two partners join @same time Step 1: Fill up the table Step 2: Find Ratio of Actual investment Step 3: Componendo on Total Profit Case 2: Two Partners join @Different Time Step 1: Fill up table Step 2: Find Ratio of [...]

## [Aptitude] TSD: Average Speed made easy without Formulas (Our Good ol’ STD-Table Method!)

If you’ve mastered the STD table method for Time n Work my previous articles, then Average speed is a piece of cake. Absolutely No need to mugup any formula for average speed. Case 1: Distance covered in two phases Approach #1: Good ol’ STD Table [...]

## [Aptitude] PnC: All possible numbers using 012345, All possible words using ABCDE, Permutation Arrangement Made Easy with and without Formulas

Following types of questions pretty common in competitive exams: How many numbers of five digits can be formed with the digits 1,2,3,4 and 5, without repetition? How many words can be formed using all of the letters from A to E without repetition? How [...]

## [Economy] WTO Doha Made Easy for UPSC and MBA Group Discussion Interviews

Tariff barriers Non-Tariff barriers Annex #1 Annex : GATT #2 : Annex of GATS (services) #3 : TRIPS TRIPS =Trade related intellectual property rights Time limit What was before WTO? India & WTO What did India Gain from WTO? DOHA what is DOHA? [...]

## [Trigonometry] HnD Type #5: Finding speed, time or distance made easy for SSC

Introduction: Trigonometry Speed Time Distance Approach:Trigonometry Speed Time Distance Mock questions Introduction Continuing in the series of “Trigonometry –>Height and Distance(HnD)–> Five types of Questions. 5th and the last type of question is “finding speed, time or distance”. Here are example questions (both solved in the [...]

## [Trigonometry] HnD Type #4: Two Buildings-Two Angles made easy for SSC

Introduction: 2 Building 2 Angles Approach Mock Questions: 2 Building, 2 Angles Introduction: 2 Building 2 Angles Continuing in the series of “Trigonometry –>Height and Distance–> Five types of Questions. 4th type of question is “Two buildings and Two angles”. Here are example questions (both solved [...]