# Category Archives: Placements

## Trains, Boats and Streams

We recommend that you read about Time Speed Distance before proceeding on with this topic. Trains If two trains are moving in same direction with… Read More »

## Time Speed Distance

Time, Speed and Distance (popularly known as TSD) is an important topic for written round of placements for any company. Distance = Speed x Time… Read More »

## Pipes and Cisterns

Pipes and Cisterns are somewhat similar to the concepts of Work and Wages. The problems of pipes and cisterns usually have two kinds of pipes,… Read More »

## Work and Wages

If a person can do a piece of work in ‘n’ days, then in one day, the person will do ‘1/n’ work. Conversely, if the… Read More »

## LCM and HCF

Factors and Multiples : All the numbers that divide a number completely, i.e., without leaving any remainder, are called factors of that number. For example,… Read More »

## Numbers

TYPES OF NUMBERS Integers : All numbers whose fractional part is 0 (zero) like -3, -2, 1, 0, 10, 100 are integers. Natural Numbers :… Read More »