Pipes and Cistern Inlet: A pipe connected with a tank or a cistern or a reservoir, that fills it, is known as an inlet. Outlet: A pipe connected with a tank or cistern or reservoir, emptying it, Read More …

# Category: Aptitude & reasoning

## SQUARE ROOT & CUBE ROOTS

Square Root & Cube Root Step 1: First of all group the number in pairs of 2 starting from the right. Step 2: To get the ten’s place digit, Find the nearest square (equivalent or greater than or less than) to Read More …

## SURDS

Surds A surd is a square root which cannot be reduced to a rational number. For example, is not a surd. However is a surd. If you use a calculator, you will see that and we will need to round the answer correct to a Read More …

## SIMPLIFICATION

Simplification Simplification is one of the most important part of Quantitative Aptitude section of any competitive exam. Today I am sharing all the techniques to solve Simplification questions quickly. Rules of Simplification V ? Vinculum B ? Remove Brackets – in the Read More …

## PROFIT & LOSS

Profit and loss IMPORTANT FACTS Cost Price: The price, at which an article is purchased, is called its cost price, abbreviated as C.P. Selling Price: The price, at which an article is sold, is called its selling prices, abbreviated as S.P. Read More …

## AGE PROBLEMS

Age Problems Important Formulas on “Problems on Ages”: If the current age is x, then ntimes the age is nx. If the current age is x, then age nyears later/hence = x+ n. If the current age is x, then age nyears ago = x– n. The ages in Read More …

## FRACTIONS

Fractions Any unit can be divided into any numbers of equal parts, one or more of this parts is called fraction of that unit. e.g. one-forth (1/4), one-third (1/3), three-seventh (3/7) etc. The lower part indicates the number of equal parts into Read More …

## DISCOUNT

Discount The discount is referred to the reduction in the price of some commodity or service. It may anywhere appear in the distribution channel in the form of modifications in marked price (printed on the item) or in retail price (set by retailer usually by pasting Read More …

## PARTNERSHIP

Partnership : Partnership is an association of two or more parties, they put money for business. Simple Partnership: Simple partnership is one in which the capitals of the partners are invested for the same time. Read More …

## Mixed ratio and proportion

Ratio Introduction: Ratio is the relation which one quantity bears to another of the same kind. The ratio of two quantities a and b is the fraction a/b and we write it as a: b. In the ratio a: Read More …

## Direction test

Introduction: There are four main directions – East, West, North and South as shown below: There are four cardinal directions – North-East (N-E), North-West (N-W), South-East (S-E), and South-West (S-W) as shown below: Key points At the time of sunrise Read More …

## TIME & DISTANCE

In this module we will deal with basic concepts of time and distance, speed, average speed, conversion from km/h to m/s and vice versa. This chapter will form the basis of further concept of relative speed which is used Read More …

## MATHEMATICS AND QUATITUATIVE APTITUDE – SIMPLE INTEREST

Introduction Money is not free and it costs to borrow the money. Normally, the borrower has to pay an extra amount in addition to the amount he had borrowed. i.e, to repay the loan, the borrower has to pay Read More …

## RELATIVE SPEEED AND TRAIN QUESTIONS

Speed has no sense of direction unlike the velocity. Relative speed is the speed of one object as observed from another moving object. Questions on train are the classic examples of relative speed and in all these questions it Read More …

## Important Formulas – Percentage

Percentage Percent means for every 100 So, when percent is calculated for any value, it means that we calculate the value for every 100 of the reference value. percent is denoted by the symbol %. For example, x percent Read More …

## Important Formulas – Mixtures and Alligations

Alligation It is the rule which enables us to find the ratio in which two or more ingredients at the given price must be mixed to produce a mixture of a specified price. Mean Price Mean price is the Read More …

## MENSURATION

Mensuration is the branch of mathematics which deals with the study of different geometrical shapes, their areas and Volume. In the broadest sense, it is all about the process of measurement. It is based on the use of algebraic equations Read More …

## Height and Distance

This topic has many practical application in day to day life. In engineering stage it is used in surveying. The basic purpose is to find the unknown variables by observing the angle of the line of sight. This is Read More …

## CLASSIFICATION LEVEL 1

Classification involves putting things into a class or group according to particular characteristics so it’s easier to make sense of them, whether you’re organizing your shoes, your stock portfolio, or a group of invertebrates. From all competitive examination classification is Read More …

## CHAIN RULE

This module will teach you the basics of direct and indirect proportions. These concepts will further help you in time and work questions. Important Formulas – chain rule Direct Proportion Two quantities are said to be directly proportional, if Read More …

## BOAT AND STREAM

Boat and stream problems is a sub-set of time, speed and distance type questions where in relative speed takes the foremost role. We always find several questions related to the above concept in SSC common graduate level exam as Read More …

## ANALOGY LEVEL 1

When you draw an analogy between two things we compare them for the purpose of explanation. If a scientist says that earth’s forest functions as human lungs then we instantly draw an explanation that both lungs and trees intake Read More …